If you’re using a plastic ticket instead of a MagicBand for FastPass+, keep it out when going through the line. Some rides require you to scan it only once, but for others, you’ll need to scan it a second time. That’s to keep people in the Standby Line from going under the barrier so they won’t have to wait as long. Believe it or not, people try that fairly often. I’ve seen people try it, but I’ve never seen anyone get away with it.