Why should you go there and how do you do it right?

Let's get straight to the criticism: foreigners pay 300 baht, and the main hiking trail is only about 1,500 meters long. Many reviewers do the math and are subsequently annoyed—and I can't blame them. What you get for your money is a clear river where you can actually swim, shady paths that cross and follow it, caves, mangroves, and limestone formations that rise up throughout the area. If you think of it more as a beautiful tropical garden with swimming opportunities than as a full-day hike, it makes much more sense.

Arrive early. Those who arrive before the big rush report having the water almost to themselves; it starts to fill up noticeably after 10 a.m. There's a restaurant on site, but at least one visitor found dishes on the menu without prices listed – so it's best to ask beforehand. The park is also an excellent starting point for boat trips to Hong Island and the surrounding smaller islands, which is probably the most worthwhile part of a day trip.