Royal Caribbean currently provides its own official Minor Consent Form. Use that form. Do not substitute a generic sample.
The current form includes child identity, date of birth, passport information if applicable, ship, sailing date, reservation ID, accompanying adult, return date, supervision authority, activity-waiver authority, and medical-treatment authority.
For cruises departing Europe, Asia, South America, New Zealand, or Australia, the nominated accompanying adult must be at least 18. For departures from other countries, the accompanying adult must be at least 21.