Thanks Dave. Good to know. I actually misread the departure time on my flight back home. It's actually 3:05, not 3:15. That being said, I may just head to the airport after my cruise. I didn't see anything on Princess' website about a luggage valet service for the Seattle port; otherwise I'd do that and maybe head to the Space Needle / Pike Place for a couple hours.
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)