There are a lot of restaurants that have burgers and fries at Walt Disney World! Cosmic Rays in Magic Kingdom and Electric Umbrella in EPCOT are 2 that come to mind. Usually, the variety is only a hamburger or cheeseburger
Practically all restaurants in WDW have burgers and fries. Disney Springs have a lot and all the theme parks fo as well. You would be spoilt for choice.
Thanks! Your answer is awaiting moderation.