Take underage girls to hotels and other places to open rooms. Will people let them stay? If they stay, will there be a policeman to check the room?

Strictly speaking, it should not be allowed, but in reality there are two possibilities. One is that the hotel turns a blind eye, and the other is that the hotel management is lax. As for whether the police will come to make rounds, it basically depends on luck. Generally speaking, if it is not reported, the chances of the police coming to make rounds are very low. If it is found, it will either be reported or it will be too unlucky. However, I advise minors not to do it because it is immoral, even if she is voluntary, because she is not sensible. Adult, it doesn't matter if you love me.