That depends on who you believe is the ultimate provider of them, and if you are thankful that you have the leftovers to eat!
Two hours.
A restaurant supervisor is in charge of the restaurant staff. Usually, there are several supervisory positions in a restaurant. A supervisor may be positioned to oversee the wait staff and front end employees, while another might take charge of the kitchen staff.
The amount of money that fancy restaurants make per year depend on how many people eat at the restaurant. The cleanliness and friendliness of the restaurant and staff will affect the amount of money a restaurant makes.
your leftovers
yes
Clownfish eat the leftovers from fish on the anemone and algae.
You eat them.
the staff
Leftovers...
It is always possible to eat leftovers if you have them. Make, or buy a large enough quantity of food and you could have a lot of leftovers. Parties can produce lots of leftovers. In any event, there is no statutory limit to the number of times you can eat them. You could snack on leftovers twelves times a day if you were so inclined, and no one would stop you.
people eat in restaurant for the ambience