I would have thought 21 was the minimum age, however, I don't know whether RCI for this purpose considers Panama North or South America. I found this on their website, but they don't say anything about cruises originating from Central America, which personally is what I would consider Panama.
You may want to call RCI to clarify this, or maybe another member can answer it better.
2007 - Majesty of the Seas (Bahamas)
2009 - Enchantment of the Seas (Western Caribbean)
2010 - Freedom of the Seas (Western Caribbean)
2013 - Golden Princess (Alaska, roundtrip from Seattle)
Well actually Panama is at the bottom of Central America that is much closer from South America than North America, and the drinking age there is 18. The problem the RCCL don't designate specific drinking age for cruises leaving ports on Central America. Since it's a non-US port and the ship don't cruise near any US city I would assume it's 18.
Had anyone already travelled on the Grandeur of the Seas? What are your thoughts on the ship?
This is a Spanish immersion cruise, right? I've sent a query to RCI about the drinking age. I can see the confusion over it. It is worth noting that this cruise is not listed under 'South American' itineraries by RCI but rather a 'Caribbean' cruise.