I ordered this book and the Birnbaum Guides to Walt Disney World. I liked both, but found this one to have so much more information. I really like the tips that actual families wrote in. They were funny and so helpful. It felt like friends were telling you about their trips and what to do and what not to do. For each park there are specific descriptions for each attraction. These include if preschool, teens, adults, etc. would like them. It also is really clear about scary or possibly frightening attractions.
This book is jammed pack with information(the font is pretty small). There are itineraries in the back for example: 1 day at Magic Kingdom, 1 day at Magic Kingdom with Kids, etc. We actually didn't use the itineraries because we were with our 3 year old, and she was more interested in seeing the characters and shows than waiting in line for the rides.
Finally, though I appreciated both books, I found the Walt Disney World Web page to be very valuable as well. I could find out where things were, when, etc. and I double checked what the books mentioned with the webpage and was glad I did in some cases.
The only complaint I had for both books was there was a lot of talk about the new additions to Fantasyland including: Princess Hall, Belle's Village and library, etc. but according to the WDW webpage, most of these attractions won't be opening until Dec 2012 and early 2013. I was confused about this until I checked online with WDW directly. I know this is not really the authors' fault as they publish books in advance using information that Disney provides, but it made planning a bit more confusing. We went in July 2012.