My wife and I went last October. It was one of the best days I've ever had. We did the Trainer For A Day program, which costs a bit more, but we got to do behind the sceens stuff, and they limit the group to 6 people a day, so it's a small private crowd.
We got 2 dolphin swims, plus we feed a lot of the animals and fish like birds, rays, and others. I'd spend the money and do it again in a New York second.
Just make your res. early, the park fills up quickly, and they only take 1000 people a day (but I heard them talking about raising that a bit soon).
If you want to do the TFAD program, deffinatly call as soon as you can. I know one of the people on my tour said that it was the only open day +/- 3 MONTHS! when he booked, and that was 4 months before the tour day, so they book quickly!
Have fun, you'll really enjoy it.