we did a pre paid excursion through Disney. It was the orient bay beach break. I would not recommend it. the bus ride is long (25 min). you get to the beach and you have chairs already reserved in a section that is very crowded. There are people walking right up to the chairs and in between trying to sell you stuff the entire time you are there trying to relax! Also because of the location the surf here is pretty rough and not very good for small kids. Also lunch is included but the food was less than desirable and after seeing how dirty the bathrooms were it made me nervous to eat there.
the catamaran left from right by where the ship docked. after a short ride out we were ready to snorkel. There were large sea turtles and lots of fish at the reef. The water was very clear and calm . After about 45 min of snorkeling we got back on the catamaran for a short ride to honeymoon beach. During the rest of the trip there were complimentary rum painkillers and beer. The beach was nice, very secluded and calm water. The water here is so salty that you can float very easily!