Imagine this Bitcoin restaurant :
All tables are against a wall... whole restaurant is build in a circle.... the center area is for entertainment. Every table have a built in touch screen television, where you order
every meal from a digital menu. After the starters... you pay in bitcoin via a displayed QR code on the screen.... and then for the main meal and extras and pudding etc..
Every table has it's own Bitcoin address
The only time you see a waiter, is when you order something special or when they deliver the food.