In planning the layout of your restaurant, one good place to start is with any franchise restaurant. These establishments spend a lot of time, and a money, and resources determining the most profitable ways to set up and run their restaurants. Using their layout suggestions in your sample restaurant floor plans is an excellent place to start. There are certain ways that the restaurant floor plan can be most optimized for drive through and for dine in traffic, and ways that the kitchen area floor plan can be used to maximum benefit.
Some restaurants benefit from having their dine in areas strictly controlled, by using crowd control lines and the like, to restrict access by customers to the order and pick up areas. These are the kinds of restaurants that usually have at least one set of doors on each side, and a solid store front. These places are able to have many different kinds of seating configurations, benches, tables, and booths.