Everything you need to know before you go, from getting there and the best months to visit, to what to pack, how the tides work and what the national park fees are.
How to reach the islands from Krabi, Ao Nang and Phuket.
When the sea is calm, when to avoid it, and the best months for snorkeling.
How tides affect lagoon access and the best times for water activities.
The packing list for a Koh Hong day trip, and what to leave at the hotel.
Current entry fees, who pays what and where it's collected.