/kloc-Can I book a hotel in Korea under the age of 0/8? ! ! ! ! ! ! !

You can't. Need to be accompanied by a guardian or an adult.

Or a travel agency. . And then you're free. .

Actually, joining the group is easier.

If you go to a strange place alone, no one will help you when you encounter difficulties and troubles, let alone go abroad.

Don't think of going abroad too simply.

Although I am only 18 years old.

But it is really inconvenient for you to go to a strange place.

Or you can contact international students studying there.