Https://mexicoairlinesupdate.zohodesk.com/portal/en/kb/articles/what-is-the-3-1-1-rule-on-royal-caribbean-17-6-2025 https://mexicoairlinesupdate.zohodesk.com/portal/en/kb/articles/what-is-the-3-1-1-rule-on-royal-caribbean-17-6-2025