Mesmerizing Ile aux Cerf: Speed Boat, GRSE, Lunch & Undersea walk (Full Day)

This full-day trip to Ile aux Cerfs is interesting because you get the classic Mauritius combo: fast, scenic water travel plus time on a white-sand island, with the bonus of an undersea walking experience. I particularly like the small-group setup (max 12), because it makes the day feel smoother and more personal. I also like that the day is packed with beach time, swimming, and real lagoon scenery, not just sitting on a bus.

The only drawback to plan around is the flow of the day. The start can feel like organized scrambling as you switch between activities and boats, and the island downtime can include extra-cost options on certain beach areas. If you like things to be dead simple and perfectly timed, bring patience and stay flexible.

Key things to know before you go

• Speedboat lagoon ride: You’ll travel from Trou d’Eau Douce to Ile aux Cerfs through clear east-coast lagoons.
• Undersea walking: A coral reef garden walk where you see fish and reef life from underwater.
• BBQ lunch with drinks included: Grilled chicken and fish, plus soft drinks, beer, wine, and local alcohol, served around midday.
• Island beach time: Swim, sunbathe, and enjoy the white-sand beaches and turquoise water at Ile aux Cerfs.
• GRSE waterfall viewpoint: You also get Grand River South East (G.R.S.E) waterfall scenery on the return side.
• Bring towels and spare clothes: This is a wet-and-sand kind of day.

From your hotel to Trou d’Eau Douce, the east-coast launch point

Your day starts with pickup from your Mauritius hotel, anywhere on the island. The tour begins at 8:30 am, and the goal is to get you to Trou d’Eau Douce with enough time to check in and get organized before the water part.

Trou d’Eau Douce is a fishing village on Mauritius’ east coast. Even if you just pass through the area quickly, it’s a nice contrast to the postcard calm you’ll reach later at Ile aux Cerfs.

This is a full-day outing, so the early start matters. You’ll feel it most if you’re staying far from the pickup route, since your exact pickup time can vary based on location.

The speedboat ride: fast, bright, and built for lagoon views

Once you arrive at Trou d’Eau Douce, you board the speedboat to Ile aux Cerfs. Expect a fun ride with speed and quick turns as you head through the east-coast lagoons.

Approaching the island is where this transfer earns its keep. You’ll see palm trees and white beaches framed by vivid turquoise water, and it’s the kind of view that makes you forget the drive took part of your morning.

A small-group size helps here. When there are fewer people, it’s easier for your guide to manage boarding, seating, and the handoff moments between activities.

Practical note: you’ll want to be ready for spray. Even if you sit in a safer spot, the ride can get you damp, and you’ll be beach-side soon after.

Ile aux Cerfs beach time: swim, relax, and plan for add-ons

Once you land at Ile aux Cerfs, the day shifts into beach mode. This is the heart of the excursion: sunbathing, swimming, and getting into the lagoon for snorkeling if that’s available during your visit.

The island experience is simple in the best way. You’ve got a white-sand setting, clear water, and the freedom to choose your pace: lounge, swim, or take the time to explore along the shore.

Here’s the one consideration: not every activity is always included or free. If you want extras like snorkeling beyond the basic access, plan on possible extra charges once you’re on the island. I’d treat the island as “included beach time” plus “optional paid add-ons” and you’ll be happier when you see pricing on things like sunbeds or shaded spots.

One of the best uses of your time is the swim window between transfers. When the group energy is high and the weather is stable, the lagoon feels at its best.

Undersea walking in the coral reef garden: short, special, and gear-free

The signature moment on this trip is the undersea walking in the coral reef garden. This is described as a walk inside the reef where you can see aquamarine species in their natural habitat, along with a large variety of fish and reef flora.

If you’re picturing a long underwater trek, adjust your expectations slightly. The underwater portion tends to feel brief, and that can be part of the charm. You get a taste of reef life without turning your day into a multi-hour technical event.

From a comfort standpoint, treat it like a controlled activity with an instructor-led setup. Still, there can be nerves in any group activity that places people in new water routines. If you’re the type who needs calm cues, listen closely, ask questions early, and take the first moments as your learning curve.

Also, bring your mindset for timing. This day runs on transitions, and undersea walking happens as part of the schedule rather than a standalone block. That means you should be ready to keep moving even if you want a bit more water time.

Islet Margenie BBQ lunch: where the drinks actually matter

Around noon, you head to Islet Margenie for lunch. The meal is served as a BBQ with grilled chicken, fish, salad, and more, plus included drinks.

This is one of the day’s big value wins. The tour doesn’t just toss you a sandwich and send you back to the beach. You get a real lunch setting with enough time to eat comfortably and reset for the next leg.

Alcohol is part of the included package, and that’s not a small detail. People talk about having plenty of rum during lunch, so if you plan to swim right afterward, pace yourself. If you’d rather stick to non-alcoholic drinks, you can do that too since soft drinks, water, beer, and wine are included.

Vegetarian options are available. If you eat vegetarian, tell the operator at booking so the meal plan matches what you need.

Grand River South East (GRSE) waterfall views on the return

On the way back, your route includes a viewing stop at Grand River South East Waterfalls, often called G.R.S.E (Grand River South East). Mauritius has a “longest river” angle to this one, and the day uses it well by pairing waterfall scenery with the east-coast island portion you already experienced.

You’ll get the view as part of the return trip. The itinerary also notes that the river ends in a beautiful spot accessible by boat, so you might see activity around the river area even if your time on land is focused on viewpoints.

Wildlife spotting is part of the attraction. If you’re lucky, you can see monkeys near the river banks. Fruit bats may also be seen perched high in trees as you approach.

This stop is not about ticking boxes. It’s your chance to see a different side of Mauritius, inland and wild, after spending the morning and midday in beach and lagoon settings.

Small group, max 12: why it changes your day

This is capped at 12 travelers, which matters more than you might think on a full-day water itinerary. Smaller groups make it easier for the guide to keep track of timing, answer questions, and handle the logistics of moving from vehicle to speedboat to island activities.

In practice, it can still feel like a busy day. There’s a lot happening in one trip: transfers, changing activities, and keeping everyone synced. Still, with fewer people, it’s easier to notice who needs help and easier for you to stay in the loop without feeling lost in a crowd.

One review-style pattern I noticed from the way people describe the day is that the first transfers can feel a little disorganized at the start, especially when different groups are getting ready for different water activities. I treat this as normal for day trips in Mauritius, but I also think you can reduce frustration by arriving with a ready mindset and keeping your essentials in one easy-to-grab bag.

What to pack for a speedboat, reef walk, and beach BBQ day

This trip mixes speed, saltwater, and sand. Bring a plan for getting wet and still being comfortable for the rest of the day.

At minimum, pack:

• Towels (bring your own)
• Spare clothes (bring another set)
• Sunscreen and a hat or cap
• Water shoes or sandals you can trust on sand and rocky edges
• A dry bag or waterproof pouch for your phone and documents
• A small cash stash for possible extras on the island (snacks, sunbeds, or paid snorkeling gear if offered)

Even with included drinks at lunch, you should still expect that you might not have water exactly when you want it during every transition. A small bottle helps keep the day easy.

If you’re doing undersea walking, follow your guide’s instructions closely and avoid rushing. The reef walk is the kind of experience that feels best when you’re calm and observant.

Price and value: is $139.37 per person worth it?

At $139.37 per person, this is not a budget throwaway day. But the pricing makes sense when you break it down into what’s included.

You’re paying for:

• Round-trip transfers from your hotel
• A speedboat ride to and from Ile aux Cerfs
• Beach time at a major island destination
• Undersea walking in the reef garden
• A lunchtime BBQ with included drinks (alcoholic and non-alcoholic)
• A return stop to see G.R.S.E waterfall scenery

If you were trying to piece this together on your own, you’d likely spend money on transport, boat access, and the special reef activity. The included drinks at lunch also add real value, especially if you were already planning to have a few.

So who should consider this price? I think it’s a good match if you want an organized full day, don’t want to coordinate multiple transfers, and you genuinely want the undersea walking experience, not just beach time.

Who this Ile aux Cerfs day trip suits best

This tour fits best for:

• First-time Mauritius visitors who want a highlight day without fuss
• People who love sea views and want a fast, scenic boat ride
• Travelers who care about doing one unique activity (the reef walk) rather than only lounging
• Anyone happy with a structured schedule and several handoffs

It might be less ideal if you:

• Hate any uncertainty around timing and boat switching at the start
• Prefer long snorkeling time on one calm stretch (this day is more varied)
• Need everything to be fully child-friendly in every segment

One child note matters. Undersea walking is not included for children in this package, and it depends on parents. Children pay only the speedboat seat.

Should you book this Ile aux Cerfs speedboat and undersea walking day?

I’d book it if you want a classic Mauritius day with real variety: speedboat lagoon views, white-sand island time, a reef walk you can’t do the same way back home, and waterfall scenery on the return.

I wouldn’t book it if you want a slow, unhurried day with lots of free time and zero transitions. There is enough movement and switching that you need to be comfortable with a busy schedule.

If you go in with the right expectations, you’ll likely remember it for two things: the underwater reef experience and the island beach time that makes the speedboat feel like the fun part, not the commute.

FAQ

How long is the Mesmerizing Ile aux Cerf full day tour?

It runs about 7 to 8 hours.

Is hotel pickup included?

Yes. Pickup is offered from your Mauritius hotel, and the tour starts at 8:30 am.

What lunch and drinks are included?

Lunch is included and is described as a BBQ menu with grilled chicken, fish, salad, and more. Drinks are included, including soft drinks and water, plus beer, wine, and local alcoholic drinks.

Is there a vegetarian meal option?

Yes. A vegetarian option is available if you advise at booking.

Is undersea walking included for children?

Undersea walking is not included for children in this package, and it depends on parents.

What if the tour is canceled due to weather, or I need to cancel?

This experience requires good weather. If it is canceled due to poor weather, you’ll be offered a different date or a full refund. You can cancel up to 24 hours in advance for a full refund.