Sorta like waiting in line without being there?
A Fast Pass is a ticket that you get from a kiosk near the ride, that gives you a return time, to jump the line at your appointed time. I highly recommend MaxPass which includes Photo Pass and Fast Passes, but is linked to the Disneyland App, and allows you to select and hold Fast Passes from your mobile device, so that you don't have to waste time running around to get Fast Passes from the kiosks directly. You can get and hold Fast Passes as soon as you enter the park, and get another as soon as you redeem them from the ride you are in. Plus you get all the photos taken by cast member photog downloaded directly to your mobile device. Worth every penny. But Fast Passes from the kiosks are free, just more effort and time to get. They run out too, so the time you save with MaxPass is worth it!!
It means you do not wait for lines
It allows you to get ahead in line for the rides
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