If you leave the room later than you were supposed to, you will be charged 10,000 won per hour. If you add a person in addition to the standard number of people, you will be charged extra [the rate for exceeding the standard number of people] per person (for those older than 24 months).
If you leave the room later than you were supposed to, you will be charged 10,000 won per hour. If you add a person in addition to the standard number of people, you will be charged extra [the rate for exceeding the standard number of people] per person (for those older than 24 months).