What a great day! We are 2 couples in our 40s who were staying only 15 minutes away. We were told to go when cruise ships weren't in port, so went on a Monday. We didn't book in advance and arrived in the early afternoon. We ended up having the whole place to ourselves with our fantastic tour guide Savian. He took us to the waterfall to start, stunning, and then tied our 4 tubes into a circle and took us down the river. He taught us about Jamaican vegetation and wildlife, including introducing us to his giant spider friend Bob. The river was so clean and refreshing. The rapids are fun but not scary. He stopped us at a jumping spot where the water was deep and there was a platform. The tour finishes by trading the tubes in for a river raft and takes us out into a bay on the coast with a beautiful beach.
I highly recommend this spot, definitely a highlight of our stay!!