Similan islands well worth a visit, bring snacks if fussy! - Picked up quite early in order to get to boat, breakfast was provided with drinks (however it was a set meal not a choice- didn't cater to allergies as far as I could see, no fruit provided so I had a drink of orange juice ) Speedboat for around an hour, drinks and snacks provided (again snacks weren't for allergens so I had a drink) Crew were amazing, green team! Enthusiastic, informative and high energy. Visited separate islands and they were stunning. Lunch was provided but this wasn't great, full of picnic benches surrounded by flies- very off putting, food was plentiful but didn't want to eat. Snorkelling experience was amazing. Islands were stunning Food was rubbish.

Similan Islands, Well Worth Visiting - It was a fun time. Sail rock was special. Snorkeling was good as waters were calm. It's a long way from Patong Beach but I'd do it again. Nap in the van will shorten the ride. Only glitch was the driver was late with pick up so left us only 10 min to down our breakfast. Our tour guide was "Lady Ga Ga" he/she was very hilarios and entertaining. Tour operators were very generous with water and sodas to make sure you were well hydrated in the heat. Breakfast and lunch were good.

Awesome adventure to do. Highly recommended - Highly recommended. We enjoyed this tour. Pick up/drop off went smoothly. This tour company really treats you well.

An increadible experience with a great tour team! - This was an amazing experience. We were picked up at the hotel which was great! We did not have to worry about getting to the experience ourselves early in the morning. When we arrived at the location where we would catch the boat to the Similan islands, an amazing breakfast was waiting for us with bread, scrambled eggs, drinks, etc. All the necessary snorkeling equipment was also given to us plus two towels in a cute bag. Then the tour started. Our tour guide Tom and his team were all incredible and really funny. They made the trip even more enjoyable! Best tour guide team I have ever had! They were also always really kind and gave us water, coca cola, and snacks the whole time to guarantee we were okay. The trip started with some rest time on an island with an amazing shelf rock shape and an incredible beach with clear blue water. It felt amazing to stay there for a while to get some rest and take many beautiful pictures. Afterward, we went to two different locations to make snorkeling. We saw many amazing fish species with beautiful colors! It was a remarkable experience even though we did not see any turtles! Finally, we went to another island to have lunch and some rest again on a beautiful beach. The lunch was the only thing we did not like. It did not taste good and for the price we paid, we were expecting a better meal. Finally, we came back to Phuket and had an amazing snack waiting for us with cookies, drinks, and pad thai. Once more, we did not have to worry about transportation to our hotel. They left us there.

Great Snorkelling at Similand Islands - Easy to book and gods experience overall. Not 100% accurate the description but still good. Snorkelling at Similand it’s amazing!

Paid premium service for nothing, disappointing - I recently booked a Viator tour to Similan Island, opting for a 2nd-floor seat at a premium price. However, upon arrival, everybody was assigned to seat on 1st-floor seats, regardless that I have paid for a higher-tier service. This discrepancy between what was promised and what was delivered was extremely disappointing. Moreover, the way the situation was handled by both the tour operator and Viator's customer service team was incredibly disappointing. Not only did they fail to provide the service I paid for, but their refusal to refund the price difference was accompanied by rude and unhelpful communication. The operator's complete disregard for my messages without any apology added to the frustration and lack of accountability. The lack of accountability and customer service was frustrating and left a sour taste in what should have been an enjoyable experience. I highly advise against booking through Viator for this specific tour, as the experience fell far below the expected standard.

Better book a private trip - Well organized and very nice crew, hence 3 stars. You are well supplied with water, Thai cola and tablets for seasickness. Advertised with a maximum of 30 people per group, there were over 40 in our speedboat. At each stop there were at least 4 other boats with at least as many passengers - do the math. The spots that were visited for snorkeling were not nice. Similan Islands are often praised for the great snorkeling and diving experience. We obviously did not go to these places on this tour, because the reefs were badly damaged and there was only a little coral. Due to the heavy seas we could not go to the last snorkeling spot - which is not a big deal, but we were out all day to snorkel twice for around 20 minutes. That is too much effort for the return or for a snorkeling trip. The food on the island was cold (would have been warm food) - apart from the soup. You are not allowed to bring your own food to the islands. 1-2 star ratings are probably being suppressed. I know of at least one such review and it is not displayed. Spend more money and book a private trip. Maybe that is better.

Big waste of holiday time - I can not recommend this tour at all. In a boat with around 40 other tourists and together with 4 other boats (at all around 200 tourists) you'll get shipped to the island. We had 2 very poor snorkeling spots, dead sea, a few fish in fear and a poor turtle hunted by all the tourists around them. On each of the two snorkeling spot, we were at a max of 30min and a big part of it was to bring all the non-swimmers to water. The snorkeling spots were a few 100m apart and very, very weared down. Almost all corals were already dead and due to so much traffic with 5 speed boats, also alot of fish already were gone. This was just a very sad picture. Why I not gave this tour 1 star? Because of the crew. They were just great and tried to make the best out of a bad situation. Next time I'll pay 10 times more for a private trip, instead of burning almost one whole day of holiday for this. I was overall underwhelmed of this mass tourist activity.

Paid premium service for nothing - The seastar company which actually run this business was doing great. But this local agent or operator is terrible in terms of service. 1) I paid extra a 2nd floor seating, but the boat I took got one floor only, which means I paid extra for nothing. 2) I don't really mind about seating, but I got no explanation at all, and I got no response when I reach out to the agent, and this really pissed me off. If you don't have premium seating available, then don't offer this option. if seat was not available accidentally, then refund the price difference to me would do the work. No response/explanation make me think I paid extra to an lier.

Don't, just don't do it. - Do not go there! This is just mass tourism at its finest and you'll loose one day of your holiday. The only star for the tour will be given to nancy and the nice crew that tried making a very bad business to a nice experience. In the end, the "snorkeling" tour had 2x30min snorkelinh with 200 other tourists in the water in a caged square. Some of the snorkeling time was spent with looking at non-swimmers trying to enter the sea and let them be teared around from the crew. Sadly, the corals were already mostly dead and the fish scared away by all the tourists hunting the poor sea turtle. It was just not nice! Newer in my life I will attend another of these tours again, next time I'll pay 10 times the price for a private tour, as my holiday time is too valuable, compared to this experience.