Thanks everyone for these ideas! You are all so awesome to share your ideas.
I happened to ask my girls tonight what they were most excited about, and it is meeting Princesses.
They each have personal favorites, but in general they all love any/all of the princesses, and one of my daughters has a soft spot for Lion King.
Here are their top princesses in order:
JM: Belle, Snow White, Ariel (& Lion King)
JT: Jasmine, Aurora, Ariel
SR: Cinderella, Ariel, Snow White
If we go to a princess meal at Norway Akershaus or Cinderella castle, do most fo the little girls wear tehir princess dresses? That will influence when in our plans we might do a meal like that - would need opportunity to garb up before, and go back to hotel after rather than in the middle of park time.