For a once in a lifetime dive, the Living Seas Dive at Epcot is worth doing. I went 10 years ago and learned of it once I arrived. The rsvp's for this is done weeks or months ahead and ended up calling every day checking for cancellations.
You get all the gear, a "guide", a video recording of your experience (extra $) and the experience of diving in gin clear waters, in a fish bowl at a Disney attraction. It was a very expensive dive, but something I will remember for the rest of my life and I have the video to relive the experience. Most of my diving had been in Southern California and the conditions at Living Seas were quite a treat.
A couple of dumb fun things while making the dive...go to the window where the observation deck is. Swim up to a kid at the glass and put your hand on the glass to match theirs...then very slowly rotate your hand 360 degrees which you can do being essentially weightless. The kid will follow you and go into all sorts of fun positions to follow you, eventually standing on their head.:ignore: Another dumb fun thing is to swim over to the restaurant portion where the diners sit at booths next to the glass and pantamime YOUR order through the glass as they are selecting theres. It's fun for both them and you and lets you become part of the attraction. <g>
