Hi Belle - I made my own book before I went - I created an image for each character and them printed them out and stuck them in a spiral bound book - one page for each character.
They went down a STORM! The characters loved them and we got so much extra interaction - and we had no children in our party.
Another DISer (Julia and Nick's mom) does a similar thing but she takes the pages clipped to a small clip board and then scraps them with the photos when she gets back home.
If you're interested in seeing my designs the link is in my sig - I don't mind other people printing them out
RJ