One of the first things my family does when entering a Disney park is grab a locker. For $7 a day at Disneyland and $10 a day at Disney World, we can store our backpack, sweatshirts, snacks, sunscreen, etc., in a centrally located area without the hassle of hauling our gear around all day. It took us years of traveling to the parks to discover the value of a locker. The freedom of getting on and off rides without the inconvenience of a backpack is well worth the cost of a locker to my family. We rarely take a midday hotel break, so it is nice to bring all the clothing layers we will wear in the evening and store them in the locker until needed.
Lockers are keyless and require a 4-digit code that you create. Lockers are subject to availability on a first-come, first-served basis and can by found at the following locations:
Disneyland Resort
Disneyland - Main Street, U.S.A. about half way down on the right as you enter the park
Disney California Adventure Park - Buena Vista Street on your right as you enter
The Esplanade - located outside the main entrance to Disneyland and Disney California Adventure Park
Walt Disney World Resort
Magic Kingdom - to your right after you enter the park
Animal Kingdom - to the left after you enter the park
Hollywood Studios - to the right as you enter the park
Epcot - International Gateway near the stroller rental AND to the right of Spaceship Earth near the restrooms.