If you're looking for terrible service and an upset stomach, you've come to the right place. My husband and I tried Sonic for the first time today, and we ate inside. The girl at the counter had no idea how to input orders (she kept calling the manager to help her) and was having an issue with EVERY customer. My husband ordered (and when I say ordered, I meant repeated it three times because the cashier couldn't get it) just a cheeseburger with bbq sauce on it. That's it. His cheeseburger came with no cheese and no bbq sauce, just a burger patty with some lettuce. He went to the counter to get some bbq sauce from them, but the cashier shot him a dirty look, and then proceeded to ignore him.
Our tots were cold and greasy (and frankly the frozen ones from the grocery store are better) and my chocolate milkshake was pure sweet syrup, and undrinkable. I threw it out. To sum up, terrible service and "food".