This is a private resort, but they allow visitors to use the beach. Not so for the chairs, which must be rented from a very diligent attendant. Many rather large iguanas wander around the property. They are not pet material and usually run off if approached. However, some people have received bad bites from them.
The snorkeling was decent close to the beach and is great for beginner snorkelers (you'll even catch a glimpse of a pair of small squid!). There's a dive shop on site where you can rent chairs and snorkel gear, buy underwater cameras and chum. Taxis know this resort well, and unlike many islands where you have to prearrange a pickup when dropped off, when you are ready to leave Secret Harbour several taxis are lined up and waiting in front of the resort.