Actually, the lockers located out near the bus stops at Epcot are really big - like for storing luggage and stuff. There are regular sized lockers inside the gates. As you walk toward Spaceship Earth from the entrance, they are on your right. They are the same size as the lockers at all the other parks. The lockers at the Magic Kingdom and MGM are also on the right as you head in from the main entrance. I think the lockers at Animal Kingdom are on the left as you enter the park. The lockers aren't huge, but they are big enough for a couple of backpacks, jackets, etc.