7. Put Together a Backpack of Daily Park Essentials
A prepared Disney-goer is a happy one. With that in mind, it will pay to have a backpack ready to go with items like sunscreen, external battery packs for charging devices, baby wipes (even if you don't have a baby), snacks, character autograph books, a camera (if you carry a separate one from your phone), and anything else you think you might need in the parks.
The sooner you pack up this bag, the easier it'll be to grab it on the way out the door as you leave home.