Knowidea

A video game themed resturant would attract a lot of customers. You can play music in the background from your favorite games such as Final Fantasy or Mario.

You can have waiters dressed in outfits to resemble your favorite game characters.

Your table could be a sheet of glass with a monitor inside facing upward. While you wait for your food you can enjoy a simple game of pong or whatever game they can squeeze into your table.

People will be happy and captivated by the environment even if the food takes a long time.