Restaurant and Instagram
If a restaurant owner were to set up an Instagram account and use it to get customers to their place would it work? The short answer is if they use it correctly.
If they were to set up pictures of staff setting up for the day and they were smiling this would say we are fun to be around. If it was sent out in the morning then people might think of it as lunch or dinnertime.
If menu items are taken when they first come to the table then people will see atmosphere not just food. If you show or send out new items that are on the menu then they can see without having to read much.
Coupons that are just Monday or Tuesday can be sent out for just that day and then they expire.