I've been to ONE - count'em ONE - buffet. My DS is in a chair, so I sorta checked it out carefully. Crystal Palace.
There is plenty of room for maneuvering at this buffet. But I can't imagine having to do it while wheeling one's own chair. We pushed him in (side entrance), parked his chair, and then I went and got his food. If he was able to tell me, I could have pushed him around to view all the food and he could have chosen. there was space.
Anyway - experience is limited... but I would say that with help Crystal Palace seems ok.
Sue
<img width="200" src="http://www.geocities.com/dmurphydis/cleveland.gif">