Every scenario I put into USAir/AirWest (too early to book, I am putting in schedules THIS season) has it priced much more than RSSC's $500 credit from my area. I think this is one of those times I am going to partake of the RSSC air, because I know they will get me there in time for the cruise, not so hard when you embark in Vancouver, rather than Anchorage with that drive to the ship.
