> Disney World has had the flash pass for at least a decade.
Just for clarification: Disney has a "Fast Pass" and there is no extra charge for it - it's available to everyone. It works much differently than the "Flash Pass" at Six Flags. At Disney you put your park pass in a Fast Pass machine at the ride you would like to ride (there are machines at every major ride). The machine will spit out a "Fast Pass" (paper slip) telling you what time to return to redeem your ride (it's usually 2 hours from the time you received your pass) and there is a window of 30 or 60 minutes where you can use the pass before it expires. You can only have one Fast Pass at a time so once you redeem a Fast Pass you cannot change your mind and get another pass until the first expires. In reality you can only do this about 4 times a day because of the time constraints. Also, the Fast Pass does not immediately get you onto a ride - you stand in a special Fast Pass line and they blend the Fast Pass customers into the regular line but the Fast Pass line starts closer to the actual ride. There is little resentment since everyone can (and should) use them. Universal Studios has a similar setup to Disney's except it's nowhere near as efficient and is generally a waste of time.
No, I don't work for Disney - I've just been there quite a few times over the past 10 years :-)