In fact, judging whether to charge is very simple. There will be a price list in the hotel room, and the price is charged. The most common is the food in the hotel refrigerator, usually beer, drinks, coffee and other drinks. There are also some packaged foods, such as potato chips and biscuits. There are many free things in the hotel, which are generally disposable. Many times, you will never run out of these things. You can take them all with you when you leave the hotel.