To add to that, starting at 7pm, every attractions, show, shop, and restaurant will be checking for wristbands at their entrances. A team of cast members clear each land for those without wristbands. At each bridge are cast members set up checking wristbands. The castle hub area and pathways near Casey's and the Plaza Restaurant are also checking wristbands. The team of cast members will eventually make their way through the hub and down main street. Along the way, they will check for wristbands on everyone.
Most people try to blend in on Main St, but it never works. Finally everyone is swept out to the turnstiles usually by 8pm. Need to go back to a store? Need to meet your family in Liberty Square? Tough. Everyone will eventually be swept out without a wristband.
Final guests in any store, restaurant, or attraction are escorted out personally.
Oh, and yes, there are two parades...same performance. The second is ALWAYS least busy.