They can be in a restaurant or a private home.

One day, he met her by chance in a restaurant.

They had been sitting in a restaurant at the time.

He played a small role as a man in a restaurant.

She worked in a restaurant and would take time off to film.

They were then told to wait in a restaurant down the street.

They're members of your party, even though you're in a restaurant and you may not know them.

Then they sat at a table, as if waiting for food in a restaurant.

Many people probably don't care where they sit in a restaurant.

People go for the experience of being in a great restaurant.