One QR on the table opens every menu in the food court. Each counter runs its own panel, sees only its own tickets, and sets how it takes money - while ordering, at the window, or the diner's choice. The court settles all of it in one statement.
Try it: on a counter's panel, change its payment setting and watch the diner's cart follow. Then place the order and see each counter get only its own ticket - with or without money to collect.