Ответ:

1.

You mustn't make noise at night.

You don't have to cook when there is restaraunt at a hotel.

2.

You mustn't throw rubbish on floor while watching film.

You don't have to stay until the end.

You have to buy a ticket to go to the cinema.

3.

You have to turn off mobile phone on a plane.

You mustn't run inside the plane.

You don't have to watch film on a plane.