Are hotels in Tokyo and Osaka strict about the number of people staying? Still no matter

Very strict! Japan is not as free as China, and it is very strict in all aspects, such as no smoking on the road, and there are special smoking places. You can't use your mobile phone in the tram, line up too close, get on the escalator and stay behind. Staying in a hotel is even more strict. For example, when you check out, you must pay it back. If you live in a room for three people, you must not live for four people. And the charge is calculated by the head, not by the room in China. I have lived in Tokyo for a long time and I know all about these situations.