Big portions. Low prices. Low quality. Basically, quantity over quality.
The restaurant offers buffet or takeout. The buffet is relatively cheap, and the cheapness is reflected in the quality of the food. Likewise for the takeout, they give you huge portions for a low price at the expense of quality.
I recommend the takeout if you're looking for a quick and cheap eat, but I would keep my expectations low. I wouldn't recommend the buffet.