There are additional charges (other water activities on Coral Island such as banana boat, kayak, underwater walk, etc., starting from 400 baht per person in cash; deep diving on Racha Yai Island, 2400 baht per person, payable via WeChat Pay or Alipay to mainland Chinese merchants). Most of the participants are tourists from mainland China, and the guide primarily explains in Mandarin. The itinerary includes (onboard slide, stand-up paddleboard, snorkeling, fishing, onboard drinks and desserts, Coral Island buffet lunch). However, the blue sea and sunset views at Racha Yai Island are very much worth it.