I can eat in your hotel. This is the convenience provided by your hotel. If I have to pay, I can be unprepared. If it is not enough, I will order food. So this is a two-sided negotiation problem, do not have to pay, if the hotel asks to pay that the hotel is depressed, black heart, not a dime, the hotel can not get up, two years is estimated to be over. Once a sale, who will go next time, you say right.
The restaurant does two tables of food, you come to do two tables, eat the money of two tables, if people come to more than you sit at three tables, then the hotel will use the food prepared for one, eat the money of three tables, if you come to more than three tables, sorry, the hotel is not prepared, either you squeeze three tables, or you arrange another. That means you're guaranteed to pay for two tables.