The top things to do in Gulf of Thailand are: Phuket: Phi Phi Islands and Maya Bay Day Trip with Lunch From Krabi: Phi Phi Islands Speedboat Day Tour Phuket: One-Way Ferry Transfer to/from Koh Phi Phi Phuket: Andamanda Water Park Ticket & Optional Transfer Koh Samui: Coral and Pig Island Long Tail Boat Tour Explore the best things to do in Gulf of Thailand on GetYourGuide