What a fantastic tour. My wife and I joined the 4 Island tour today . It was amazing , we would have given it 5 stars if the brochure said bring your own food for breakfast or eat an hearty breakfast before your pickup at 8.30am, has the buffet lunch was served at the last stop at 1pm. ( everyone was very hungry swimming and snorkeling take z lot of energy ) The 1st part of the tour was a songtaw journey to the port , 20mins. Were 3 long-tail boats awated an eager crowd. It took approximately 1 hour to reach the 1st island , the sea was kind and not to choppy, mixed sunshine and over cast made for a perfect day for us. Swimming and snorkeling at the 4 islands was very enjoyable whilst the Koh Muk Emerald Cave was mind blowing, nature at its finest. The guides were great and lite the way with their torches as the group swam the 80m of cave tunnels to arrive in the Emrald cave " it was jaw dropping", Buffet food was good and plenty full some returned for 2nd and even 3rd helpings as none went to waste. Highly recommended this tour.