The food could be awful and this would make no sense. The pace of eating is relaxed, languid, happy. Not everyone speaks great English here, but this is the sort of restaurant where if you enter looking even slightly lost, someone darts out from behind the counter to give you a tour of the place and show you how it works. Pay at the end. Obviously cafeteria food is not going to be the most sophisticated cooking ever executed, but it's better here than you might expect.
Brazilian food tends to be a lot of meat and potatoes, or meat and rice, or meat and yuca.
Beans play a significant role. Stews are popular, and stews tend to get better the longer they simmer. The total spread is three steam tables' worth of food, and it changes from night to night. Another night there was a full tray of boiled cornmeal mush, much like polenta. The other trick is to save room for the meat.