​Sink to wash your hands at entrance to every food establishment.

That’s right, you wash your hands when you enter a restaurant or food court or area where food is sold to be eaten immediately. The cultural norm is to wash your hands on entry. Then wash your hands on leaving.

Sure you could go to the toilet but how many people actually do? Then there’s the cases where the toilet is down the hall, out the emergency exit, round the corner and in the next major city.