Yes, children can check themselves out of the Oceaneer Club and Oceaneer Lab on Disney Cruise Line, but only if they are at least 8 years old and have explicit parental permission documented in their profile. This "self-checkout" privilege is not automatic; parents must opt-in via the Disney Cruise Line Navigator app or at the youth club's front desk. Once granted, the child can leave the club independently to find their family or head to a scheduled activity. For children aged 11 and up in Edge (the tween club), check-in and checkout are entirely self-managed, as these programs are designed for higher independence. For younger children, a secure checkout process remains mandatory, requiring an authorized adult with a "Key to the World" card and the family's secret security word to verify the pickup.