DD just got the Birnbaum's "For Kids by Kids" for her 7th b-day -- it was part of a scavenger hunt to tell her that Disney World was her present. She's older than your DD so she can read it alone, which she does, a LOT! Even for a 5yr old, though, she can look at the pictures, plus you could read it with her, and it makes them feel involved in the planning. In fact, DD brought her book and a pen and paper to our planning meeting so she could make sure we were doing thing to her satisfaction! As someone else said, there's also a section in the back with places for the kids to make notes about the things the did on their trip, too.
Personally, I don't get anything out of Birnbaum's other than the pictures, either. Love, love, love the Unofficial Guide! I also picked up another book, "Treasure Hunts at Walt Disney World" (or something like that) that I'm going to do while we're in the parks -- they have ones that will work for the younger kids.
