I don't believe there are any dinner buffets except for the kids' buffet at The Islands Dining Room and the churrascaria style dining at Latin Quarter in Citywalk which is a pay one price meal.
With the churrascaria dining experience, you’ll enjoy a variety of exquisite meats—including filet mignon, lamb, pork ribs, sausage, chicken, and more, including the house specialty Picanha (top sirloin). This decadent buffet also includes a gourmet salad bar filled with American favorites and authentic Brazilian side dishes.