The lush islands, sandy beaches, and glittering lagoons of the Angthong Marine Park lie just west of Koh Samui in the Gulf of Thailand. A big boat cruise offers a great-value way to explore and this tour includes hotel pickup, breakfast, and a buffet lunch onboard. Optional activities including hiking on Koh Wua Ta Lap, kayaking around Koh Mae Koh, and swimming and snorkeling at the islands’ beaches.