My mom and I went to Sonic, during happy hour, and ordered 2 large drinks. Another customer pulled up next to us and ordered chicken and a drink (we know that because our windows were down). Not only did the other customer get their order before us but it took 14 minutes for us to get our order.
I've worked at sonic and that would never have been acceptable. We weren't given an apology for delivery time, offered a discount, or anything. And when we left, the other side of the lot was empty.