Do hotels in Japan need to be over 18 years old?

If you go with your family, as long as the family conditions are enough, it is basically possible to go to school to get a certificate of attendance.

This situation may be more complicated if you go alone.

First of all, there is no problem for adults to stay abroad.

Although Japan stipulates that minors can stay in hotels alone as long as their parents write a letter of guarantee or contact the hotel in advance.

But after all, this is a Japanese rule.

For outsiders, even if lz's parents wrote a letter of guarantee, it is difficult for the hotel to judge whether it is true or not. So it is very likely to be rejected.

However, this is only a rule. In reality, many hotels don't care about this for the benefit.

So if lz can speak Japanese, you can call to ask whether the hotel you want to book accepts minors to book separately.

If you can't speak Japanese, you can find a hotel reservation center similar to FreeTravel 400-078-1919 and ask them to contact the hotel for confirmation.

This should be the most reliable way.