While this is an official look at Disney (meaning sanctioned by the folks at WDW and not always giving two sides to the story), I always buy this guide when we haven't been to the parks in a few years. The unofficial guides are great for giving scathing reviews on restaurants, etc., but only Birnbaum's guide has all the secret keys to the kingdom, so to speak. As a Disney Vacation Club member, I've been to the parks more times than I can count in my lifetime, but Disney is constantly reinventing things (i.e. Fastpass system, reservation time lines for restaurant reservations, etc.) Knowledge of those two alone, can make or break your park visit. For that reason, an updated version of Birnbaum's latest edition is always in my hand before we leave for Florida. Always a class act.