We did last Dec. and the food was good. It is the usual WDW buffet food. But the best thing they have is the cold strawberry soup. You must try it, it is good enough to have as desert with some ice cream on it. They serve it as an appetizer on the salad bar, but it is wonderful.
1900 Park Fare isn't the usual 1900 Park Fare right now because it is under construction and it is a pre-plated dinner, so if you go after October 1 then I would reccommend it but if not I would skip it for now.