Travel + Leisure reports that “Carnival Cruise Line implemented a curfew for all kids and teens, requiring unaccompanied minors to be out of public areas after 1 a.m.”

It joins the ranks of Norwegian Cruises, where there is the same curfew for teenagers.

The chief reason for this policy is safety. It also allows adults to enjoy the ship after hours without interference.

A representative for Carnival told the publication, “everyone has a better time when children are supervised. This guideline is consistent with our commitment to safety.”

Travel + Leisure notes “Carnival requires most guests who are under 21 to travel with a relative or guardian who is 25 years old or older.”

There are exceptions to the new policy, however.

The curfew doesn’t apply to younger passengers who are accompanied by an adult who is at least 21 years old. It also doesn’t apply to “young passengers who are involved in a Club O2 or Circle C teen activity.”

For clarity, Club 02 is geared towards passengers aged 15 to 17 and Circle C is for passengers who are 12 to 14 years old.

Carnival offers plenty of services and activities for younger passengers. There’s a Night Owl service for passengers between the ages of 6 months and 11 years. It runs from 10 PM to 1 AM.

During the day, kids can also enjoy access to mini golf, water slides and on some ships, roller coasters.