Sherri said:
So if everyone got a fp for the same ride and all showed up whenever they wanted, I guess it defeat the purpose of fast past. The idea is crowd controll and if everyone follows the rules then it works.
We have been a few minutes early for rides in the past and they had a line of others waiting at the fastpast line until the clock said the correct time. You have an hour to show up, you should plan accordingly.
Not exactly "whenever you want." Showing up prior to the window won't work, and it shouldn't. Showing up ahead of your time blows the system.
Showing up after your window doesn't really matter because it's basically a "rolling window" for the ride. Sure, the riders have a set window, but that fastpass fits into any one of 12 five minute windows. If you miss your window, coming back later that same day doesn't throw the system out of whack because somebody got your "spot" so it didn't change the FP wait for the ride.
If you're morally objected to it, that's one thing. But from a mathematical standpoint it doesn't throw the system out of whack under normal circumstances. Under extreme circumstances (which I anticipate coming in opposition of my point above

), yes showing up late would kill it. If everybody that had a FP from 1:05 to 2:05 for Buzz ALL decided to show up at 6:15 will all the 6:15 folks showing up at exactly that time, there would be anarchy.
This is why, for the most part, it's an allowed practice under normal crowd circumstances.
Don't remember where, somewhere online, I read a bit about the math that goes into the FP system, and how they tweak it for different rides, etc. Pretty interesting.