"Restaurant" means a structure in which the principal use is the preparation and sale of food and beverages. A restaurant is an establishment maintained, operated, and/or advertised or held out to the public as a place where food and beverage are served to the public on demand from a menu during stated business hours, served in and on reusable containers and dinnerware, to be consumed on the premises primarily inside the building at tables, booths, or counters, with chairs, benches, or stools. This use may include incidental delivery service using no more than two delivery vehicles.