Thanks everyone. Just as a follow up, I was checking itineraries and prices for August / September next year, and I'm not sure that I can afford much above an Ocean View, if that, so I may just have to do an inside cabin, and go to the public lounges / open decks for the glacier viewing, and just make sure I get up there early.
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)