I did the 4 day 4 night (14 dives) liveaboard in the similan islands. The dolphin queen was a good value and even as one of the boats with the most guests it was not crowded. Divers were split into 6 groups of 4 divers and only 2 groups entered at once. The crew prepared and packed up all the equipment. All we had to do was the diving. They had an extremely talented photographer onboard that displayed the photos every night and sold them at a great value at the end of the trip. There was lots of good food. Staff and crew were very helpful. We saw lots of marine life though nothing very rare or spectacular.