One of my favorite of all Caribbean excursions. The hike is strenuous, moreso coming back (uphill). The falls are worth it though. Wear sturdy athletic shoes (trail runners are best), the trail down and up is difficult to do in sandals. Also, your shoes are likely to get muddy, it is in a rainforest. Once you get back to the top, there are locals that will clean the mud off your shoes for $5. Tip them a little more. There's a small vendor village at the main parking lot with the usual trinkets and t-shirts.