You can have a cheeseburger and that's about it. The fries aren't gluten free and they do not allow substitutions.
The owners know everything on the menu and all the ingredients included. For those who have gluten intolerance, but whose food can touch non-gf food, this is an excellent choice, as many items in their home style menu are naturally gluten free. I had the Smith Apple Salad with grilled chicken.