Hmmmmm. That's tough. If you peruse the lunch menus at allears you will find more entrees under $20 than at dinner. Sci Fi at HS has an all day menu with a few items under $20. I haven't looked at the 50's Prime Time but they may as well. The Plaza at MK has cheaper entrees but they are very casual, soups, salads, sandwiches, etc. Look at the menus at the resorts if you are willing to leave the parks but I think you will find more at lunchtime.