I will never tell....
Though the large tour groups would try to game the system. They would send a few chaperones to the FP machines with a stack of tickets for their group (while the group was on an attraction) and take up a majority of the machines. It would back up the lines at the machines and really get other guests angry because they would purposely take their time. In an effort to expedite the process, often the CM at the FP kiosk would just hit the button and pump out a bunch of FP's for the group. Well, after a while the tour groups caught on and realized that because the tickets were not run through the machines, they could go to another attraction and do the same thing there. They could get FP's for all the attractions in just the time it took to walk to each location. We caught on and instead would take the chaperones to one kiosk and have them run all the tickets. And made sure the button was locked if a CM was not present. Fun times!