Awesome shore excursion! So many things to do - we did the 1/2 mile zip line (double awesome!), the water park, the roller coaster, the water slide, and parasailing. There were many other things too - we could have spent 3 times as long at Labadee. Nicely isolated from the rest of the island, it was quite secure and we had no troubles with leaving towels (or shoes) for hours on a chair. HIGHLY recommended for adventurists as well as just plain beach goers (you would not have to get out of your chair to get drinks all day long).
A no thrills gentle float down a river - with an occasional fast water / shallow river - very mild white water. Had a good guide with very reasonable english. Had a very nice lady guide on the bus ride to & from the docks as well. We would have liked to book a few more things to do but could only get this one event in the time between dock & departure. Completed the rest of the 2 hours shopping and eating at the port town.
Beware outside the port area you are in Jamaica with all of the petty theft that occurs. Strap everything you have to your body. We lost our shoes under a table at an excluded beach after only 10 minutes!!!! For this reason, and not all that much to do at this port, we'll not be taking any more trips to Jamaica!