I'm afraid that the Burger King in Mattoon is nothing to get excited about. In fact, just the opposite; I ate there about ten years ago ( burger and fries ), and was very disappointed in their food. Just one man's opinion, of course, but I would never go back.
So you went there ten years ago once and was disappointed and haven't returned. I guess that warrants a comment here. A few years ago, I worked on a project that brought me by that Burger King 3-4 times a day. We stopped there for lunch about once or twice a week. Was it the best burger or fries I've ever had? No, but I didn't expect them to be. Their food reminded me of the Burger-Shake in Lexington, KY. For the price, it was quite satisfactory. It's been about three years since I last stopped there, but if I found myself in the area again, I wouldn't hesitate to stop and eat.