You just walked up to the window and ordered your food. Within three minutes, it would be ready. If you wanted, there were three or four tables available in the restaurant. What they had going for them was great food at ridiculously cheap prices. This resulted in popularity so great that they were able to expand into a full-fledged restaurant.
Nothing remains of the original place except for the food and the prices.
You still get great food for a bargain, but you have a bright and reasonably clean restaurant to dine in. The food is consistently fresh with light sauces and crisp vegetables. For a light lunch, come in for the soups. You get a huge bowl full of soup with meat, seafood, noodles and vegetables in about as many combinations as you can imagine. There are also a number of large rice and noodle bowls.