I would use caution with autograph books -- many have said that they are treasured memories and I certainly would not deny that. However, too many children and parents we have found locked into "quest mode" with the books -- so much so that a good part of the vacation was spent finding characters to the point that instead of interacting with the characters, the children just shove the book at the character. Also, since it is a quest, be prepared to spend hours a day in lines and the sometimes disppointment of missing certain characters, which is inevitable. For an expensive vacation, that may not always be a good use of time. I wouldn't say to not do it, but maybe set up guidelines with your childern if you do (5 autographs a day, no line over 2 minutes, etc.)