Food
Prepare easy to cook meals to you keep your restaurant selling food for a long time. Quick food includes dishes such as onion soup. If you have the same type of food on the counter, you can stack new food on top of the old food to add servings to what is already there. You can add as many servings per counter tile as desired to keep it busy for a long time.
Layout
Purchase more walls and tiles to expand your restaurant. Space can run out fairly quickly and you will need to invest in more assets in order to expand. Save your money and expand outwards into the grassy areas with different equipment, such as tables, chairs, stoves, and other items. Keep searching for new areas which you can expand. If you do not have enough cooking stars to expand, look at your current appliances and search for the foods that can be starred the fastest. Cook them, serve them, then try expanding again later.
Stations
Make sure that your restaurant stations are organized. Keep the tables and chairs as close to the appliances as possible. The farther apart they are, the more time the waiter will have to spend walking to serve customers. Although this will make your restaurant appear cluttered, it will improve its efficiency.