Yes, children can have their own room on a cruise, but policies vary by line and usually depend on the kids' ages and the room's proximity to the parents. Most major cruise lines, such as Royal Caribbean, Carnival, and Disney, allow minors to occupy a separate stateroom if it is directly adjacent (connecting) or across the hall from the parents' room. For children aged 13 to 17, some lines are more flexible, allowing them to be in a cabin a few doors away. However, at least one person in the travel party must typically be 21 (or sometimes 25) years old to officially "lead" the reservation, so you may need to book one parent and one child in each room on paper, even if you switch the sleeping arrangements once onboard. You can usually request extra sets of key cards from Guest Services to ensure everyone has access to both rooms. This setup is a popular choice for families wanting extra space and a second bathroom. Always verify the specific "Minor Guest Policy" of your cruise line before booking, as some luxury or adult-oriented lines may have stricter requirements regarding adult supervision in separate quarters.