7. Disney employees provide amazing customer service.
Employees in Disney Parks (known as Cast Members) are trained to offer the very best customer service, so much so that there's a myth that they have to do anything you ask of them. While that's not exactly true, they will do their very best to fulfill your request within reason.
On top of direct customer service, there are loads of things they do behind the scenes to keep the place running smoothly. When you get there, take note of how clean everything is compared to other amusement parks. The difference is real.