Matt Stroshane/Disney

One of the top things you should never do at Disney World is sleep in. We get it; you’re going to be tired at the end of every day, and postponing an alarm until 9 or 10 a.m. doesn’t seem that late. But the parks are less crowded in the early morning and late at night, so getting to the parks the moment they open will save you tons of time waiting in lines. Late risers will get to the parks around 11 a.m. or so, meaning you’ll have longer lines at security to get into Disney World in the first place, and you’ll also have missed out on preciously short wait times.