Never been to the one in Orlando, but as a huuuge Titanic obsessor, I'd LOVE to go.
I recently went to the exhibit in Toronto, and found it to be amazzzing.
I was upset that I couldn't take pics, but I mean, it's understanable considering how delicate the artifacts are.
This one was one of the exhibits where you get a ticket with a nam @ the beginning, and like Cool-Beans, my dad got a well-known person who didn't survive, so there was no "survive or not" game for him either (he got Bejamin Guggenheim)
But really, it's worth it if you're remotely interested in the Titanic! (if it's at all like the one in Toronto)