Not sure how lucky you can be getting an ADR at this late date but it would depend a lot on what kind of food you like to have. I enjoy the Plaza Restaurant on Main Street - it has a great burger but also sandwichs and such. It's fairly simple fare and affordable - the desserts are the best as it is attached to the Ice Cream Parlor. Also, you might think of the Wave at the Contemporary or really any of the places along the monorail - really depends on how much you want to spend and what you like to eat.