Fast Passes are the way to go to ensure you get to experience the popular attractions and rides! Disneyland uses the paper Fast Pass system so you need to head to the Fast Pass Distribution area for the ride or attraction you wish to pick. Only 1 Fast Pass per person per park is permitted at one time. When the Fast Pass is used or the time has expired, you can obtain another Fast Pass for a different attraction. With a park hopper ticket, you can obtain a Fast Pass for Disneyland Park, head to California Adventure to get a Fast Pass for a ride there and effectively have 2 Fast Passes at the same time! But it is a lot of walking back and forth between 2 parks if you decide to do this! There are sufficient rides with decent wait times that you can wait in line for less busy attractions while holding a Fast Pass for busier ones. With a Fast Pass, you return to the attraction during the designated time within the 1 hour time frame and you can skip the lines and go straight onto the ride! Three day park hopper tickets also give you 1 Magic Morning, so that's one morning of early admission to the park before the park officially opens. This is a great option to go early before opening to check out the popular rides without the added crowds!
Fast Passes are available for the following rides: Indiana Jones Adventure, Splash Mountain, Big Thunder Mountain Railroad, Roger Rabbit's Car Toon Spin, Autopia, Space Mountain, Star Tours.