I can definitely see where Denise is coming from, however I believe that swim-with-dolphins programs (and zoos) can serve a purpose other than just indulging us on our whims. It exposes young children to wildlife in a positive way and helps them appreciate animals, and hopefully ultimately protect them, in a way that they might not developed without that hands-on exposure.
After going to Hawaii with us this past summer, my teenagers were asked by Grandma what their favorite vacation was. Their immediate response: Swimming with the dolphins!!! That vacation was in 2001 and they were 7 and 9 at the time. That gives you some indication what kind of impression it made on them. My older daughter has been collecting dolphins ever since and she has dolphin photos in her room as I type. She also listed "Marine Biologist" on her career list for years (until she realized it would mean taking a lot of science classes.)
BTW, we saw plenty of dolphins in Hawaii and have been going on dolphin watch zodiak tours in Hilton Head island since they were babies. Nothing affected my children to the degree that swimming with them, and touching them, has done.
I am now opposed to taking dolphins from the wild to use them in these programs. But turning rescued and born-in-captivity dolphins that are not candidates to be returned to the wild into ambassadors for their species is not a 'bad thing' IMO.
So if you do want to swim with the dolphins, my suggestion is to research the sponsoring company and determine whether the pros will outweigh the cons.