Why do so many restaurants participate in the Gourmet Society?
No restaurant has every single table full at every single sitting. Therefore they are not doing as much business as they could. Thus it would make sense for them to be a participant of the Gourmet Society. Restaurants that participate in the Gourmet Society have fixed costs for every sitting: staff, building and raw materials (By raw materials we mean food. Gourmet Society restaurants are not the sort of establishments that use frozen food thus if they do not sell the fresh produce they have to throw it away.) It therefore makes sense for a restaurant to have someone dining for half price than to have no one eating at all, as the fixed costs have to be paid whether the table is full or empty.
