I checked out that book but settled on "Disney for Dummies". It has the same message - but its funny.
Most of the advice we read turned out to be pertinent. For example we took a 7 and a 4 1/2 year old. The 7 year definitely got more out of the vacation. She just "got it" more. Her little brother had a good time, but he really didn't have the same appreciation for where he was and what he was doing. He did all the same rides, but whereas she loved Space Mountain and Dinosaur, he found them scary. Actually, she found Dino scary too - so she did it again. At 7, she is into "being scared for fun". The 4 year old wasn't quite there yet.
The thing is, there is an art to "doing Disney".
Disney is alot of work. Crowds feel crowded, heat feels hot, expensive looks expensive and scary looks scary there - just like anywhere. It has to be planned to a certain extent, and that is work too. Depending on when you go and who you take, you actually have to pre-plan how you will handle the weather, the crowds, the money and the attractions - all according to the tastes and preferneces of your party. Its not a wall to wall kids paradise, or adults paradise either. Not a place to "just show up" to.
These boards will help you out alot. People know alot about Disney. But you also have to be careful here. Alot of people are real Disney experts with strong opinions on many things Disney. Some people take multiple
Disney vacations a year (I didn't know such people existed until I found these boards!) Remember to keep your own budget, personalities and preferences in mind when planning your vacation or you'll find yourself needlessly stressing.
To quote my 7 year old "The Disney commercials in Canada aren't really true - they just show it all full of colours and stuff". Her first lesson in reality, I guess. She had a good time, and already asked if we can take her to see
Disneyland in California next (not unless she comes into alot of money!). But its not a Fantasyland.
Good luck!