We were there a couple weeks ago on a Sunday am around 9:30. We stopped on our way home. It was not busy at all. People were walking up and not waiting long. We had adr's but I don't know if everyone did. I did try to change my time a couple days before we left and they had a lot available. We did not give them a credit card so I don't think they charge if you are a no show. If it is important to get in and out quickly, I would make an adr. It was definately the best breakfast buffet we have had at WDW.