We took our two kids down there for the youngest child's 5th birthday a couple weeks ago. With the exception of being there on a Monday and unexpectedly waiting 45 min to get in, it was worth it.
Taking pictures was hard, as there was no flash requirements in most of the building. We had purchased a new 10 MP camera and wanted to compare it to the old 4 MP for quality. A little hard to do.
I liked the open layout, as it was rather busy yet didn't feel 'crowded'. Many different species of fish (mostly freshwater, as has been discussed) but plenty of my favorites...the rays! I've been researching them ever since, and even upgraded my tank this week (though still not big enough, I'm afraid, for one). Well lit, didn't feel humid or stuffy as it usually does in LFS, etc.
I wasn't a big fan of the show(s) in the auditorium though. Seeing the dolphins were cool, but with the nice view of the Lake out the windows, it created shadows and made it tough to see/photograph at times. They did more 'tricks' with the red tailed hawks than the marine life, and one only wants/needs to see a hawk fly from one end of the room to the other so many times.....I know they were training and all, but 3 or 4 different birds compared to 3 dolphins (and no other marine life) all going at the same time was disappointing.
Probably a bit expensive for the product, but a fun day was had by all.