It's good that RCI is doing this. Hopefully other cruise lines will follow if any storms get close enough to ports of call. As my mom works for the Red Cross, I know that hurricane season in the Atlantic is from June 1 to November 30, so you may want to watch the news for developing systems, as it is forecasted to be an active tropical storm /hurricane season.
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)