Can two people stay in the hotel now and one person stay?

You can't. According to the public security regulations, people who enter the hotel room area must register whether to stay or not. Not only the guests, but also the little brother who delivers takeout, must scan the ID card to register if they want to enter the guest room area. So now the take-out of the guests is put in the lobby, and the guests pick it up in the lobby themselves. Guests staying in the hotel need to register more.