Hi, My DD has done the Alice tea and the pirate cruise from the Grand Floridian. She had rave reviews for both.
I'd say out of the 2, I'd pick the pirate cruise. They get 2 hours on the "high seas" looking for pirates. There are several stops along the way & they do find a pirate & treasure. DD talked about this cruise for a long time. A tip- send a disposable camera with your girls.
The Alice party is an hour. They get to decorate there own cupcake, have apple juice tea with Alice & the Mad Hatter, and there is a treat for Mom at the end. Definatly bring an autograph book. My DD brought Mardi Gras beads in the shape of mushrooms for Alice. She wrote a sweet thank you to her in her book. You also get a picture with Alice & Mad Hatter (can't remember the size, 5x7 maybe?).
Like I said, it's a hard call between the 2. Both are well worth the money & we plan on doing them again with our younger DD.