Actually depending on the situation I wouldn't mind placing the order on the webpage. If we're doing this through phones then do it right. A superfast simple website, click to order, pay with Bitcoin, arrive at the place, take the food and eat.

This is a different type of restaurant though, and probably already exists, but 10x shittier than what I described: you have to install an app, register with a picture of your guts, pay with your CBDC account, then the food is never ready.