The way the closing sweep works is: at closing time the doors to the attractions and shops (except the ones in the Port of Entry) close. If you're inside, you get to ride or finish your shopping. As each ride or shop closes, security is notified and they start nudging everyone gently toward the front of the park. The time from the beginning of the "sweep" until the park is called "clear" can be anywhere from 30 to 90 minutes...depending on how many guests are in the park at closing.