10. Line Jump
No one likes to wait in line. But it's a necessary evil of any theme park, particularly one as popular as Walt Disney World. You're going to spend some time waiting, even with excellent use of FastPass+ reservations. So just accept it, and don't skip ahead in the line. Make use of the My Disney Experience App and the signs at the front of attractions to get an idea of how long your wait will be, and prepare to spend that long in line. I know it can be tempting to jump over into that FastPass line or to “catch up” with your family at the front, but just don't. Not only is it unfair to the guests following the rules and waiting their turn, it can get you dismissed from the park.