Originally Posted by
dgreen12
Have you looked at flying into PDX and overnighting there?
Take one of the frequent PDX-SEA flights the next morning (low risk of missing the cruise) and then Uber into the port (or rent a car and drive from Portland.)
I was also going to suggest this. It's an easy-enough flight, train, bus, or drive to get to Seattle and relatively low-risk unless the volcano erupts (but then you'd have a lot more to worry about than missing your cruise).
-J.