I'm going to piggyback off this post. I have always wanted to swim with the dolphins as well. Like you, George, I'll be going to the Western Caribbean (Harmony) over Thanksgiving. I don't want to go if it is in a swimming pool or unnatural environment for the dolphins. I also don't know how to find out if a place humanely treats dolphins as stated above. I've only been on one cruise (hooked....planning my Alaska cruise now!) and have never done an excursion from a 3rd party.
Any advice is greatly appreciated!