Things you should never do in a restaurant

Keep it simple, stupid

The likelihood is that your waiter isn’t studying for a degree in pure mathematics and, as such, wouldn’t be able to work out what you owe for the eighth of the pizza you had on top of 2.3 handfuls of fries. Either work out who’s paying what before the card machine comes out, or download an app that does it for you, like Hello Casa. Alternatively, stop inviting that friend who seems to be AWOL when it’s their turn to buy a round.