Absolutely fantastic! Our tour guide spoke excellent English and had an excellent sense of humor, and the crew was friendly, kind, and professional. We had a bit of a situation with a monkey entering onboard at Monkey Beach, but it was handled quickly and with the safety of the passengers in mind. A full run of the greatest hits of Koh Phi Phi followed, with detailed and fascinating explanations of cultural phenomena that Western travelers might not understand, such as the commercial significance of Viking Caves, and incredible snorkeling. If the sunset or your shark luck wasn’t quite what you had hoped, the guide showed you real life clips from more lucky expeditions, which only served to complete our profound satisfaction with the experience. They even took us to swim with bioluminescent plankton!! Everyone on the boat got to know each other, and saying goodbye to them and the crew felt like saying goodbye to old friends. I couldn’t recommend this tour or the people on it enough, it was incredible.