Every child dreams about it, and every parent braces themselves for it: Walt Disney World. With its four monumentally popular theme parks, two water parks, and the dining, entertainment, and shopping complex in Downtown Disney, this requisite family vacation can be daunting. Calm your fears by taking advantage of cost- and time-cutting deals. Use the FASTPASS service, which gives you time to explore the park rather than waiting in line before you return to hop on the rides. And stay at an on-site hotel for free transportation, extended hours at the theme parks, and special offers.