I just want to bring up one caution about Ariel's Grotto. It's pretty packed in there, especially if you sit at the tables in the middle, which we did both times we took our nieces.
Because of that, I don't have any pictures of the girls with the princesses without a strange family eating in the background!

Kinda ruins the effect!
I'm always jealous when folks post their PFF pics with the lovely fairy tale backgrounds. But that said I know my family wouldn't have the patience to wait it out at PFF. And we all loved the experience of Ariel's Grotto. My DH particularly loved that he could enjoy a beer to get him through the process!