Restaurateur Robert Jones, who runs the Oyster Box, Castle Green and the Crab Shack, says that most people do not understand the impact that a late cancellation or change in the number of diners has on a restaurant.
He has also asked that Islanders turn up for their table at the right time to ensure good service.
Mr Jones explained: ‘If you lose people from a booking without enough notice to resell the table, the restaurant loses revenue.’