I've never been, but given the raves about the burgers, if we do go, I'd expect a REALLY good burger - something twice as good as burgers in the parks.
We have a restuarant nearby the serves the "best burgers I've ever had" Angus meat, grilled over charcoal with Amana Blue Cheese. Anytime I hear "good burger" I'm a little disappointed if it isn't that burger.
I really don't expect that burger at Beaches and Cream - but if I waited an hour, I would be disappointed to get a park burger. (Disney's park burgers aren't bad for what they are, but they aren't worth an hour wait.).
We may end up here on our arrival day - plane is supposed to land at 11:20 - get luggage, grocery stop, drop off luggage (check in if the room is ready) and I really don't expect to get there before 2:00. If its crowded, we will go into Epcot and eat WS counter service.