Love FDs.

Its extremely busy basically every day of the week because its reasonable price wise and the food is pretty good. So how do they do it?

A small limited menu. Seriously.

Whenever you see that at a restaurant, its usually a good thing. It means the food will likely be fresh and the ingredients of a better quality because they arent worried about wasting a ton of money on daily food waste for a large massive menu.

If you ever have watched Kitchen Nightmares, you'll notice the restaurants often lost alot of money on food waste of already crappy frozen and premade ingredients because their menus were so big. The food already wasnt good, so they would get into a kind of doom spiral. (Bad food quality, less customers, less money for any quality ingredients, repeat.)

FDs keeps cost down by buying enough of what they need, making alot of it on the same day of order, and no more. If they run out, they run out. I noticed this with their fish fry. I'm not sure how fresh the food actually is, but the quality of ingredients is far better than most places around and often compares to your much more expensive restaurants in the area.

They end up with a very loyal and expanding customer base that fills up the place constantly and havent had to adjust their prices as high for inflation as others. It's a winning recipe that keeps people coming back for something thats hard to find around here: Quality food at a very reasonable price.