Thanks so much for the offer, but since the recommendation has been to
not take the train to Vancouver the morning of our cruise, we are now looking into flying directly into Vancouver, despite the exorbitant cost. Also we waited for SWA to open for our travel dates and their prices were not that great, we were hopping to get at least a flight and a half on points.
I will continue to follow airfare prices for Vancouver, but appreciate all the info and assistance on this thread.
If it's still too expensive to fly into Vancouver, someone mentioned earlier on the thread that there is a "Park/Stay/Cruise" at the Accent inn in Richmond. Richmond is the same city in which the Vancouver Airport is located, so a taxi from the airport to the inn isn't likely to be very expensive, and it's pretty cheap to take the Quick Shuttle from the Seattle Airport to the Vancouver Airport. That would give you the night before your cruise and transportation to your cruise in one, and might save you some money over airfare to Vancouver.
If it's cheaper to fly home from Seattle, you'll want to make sure you take an evening flight (I wouldn't recommend earlier than 5 p.m., to be safe, assuming you take the 9 a.m. shuttle), but the Quick Shuttle also has a shuttle which picks up at the Canada Place Cruise Terminal and takes you directly back to Sea-Tac. If you plan to stay in Seattle for a few days, get off in Downtown Seattle--you'll pay less, and it will put you close to the Space Needle. It drops off and picks up at the Best Western Executive Inn, which is worth considering if you need lodging in Seattle.
If you're looking for a good deal on airfare to Seattle, it's a good idea to keep an eye on Alaska Airlines--they're the most common carrier here. If you're coming from a long distance, you may also want to consider getting an Alaska Airlines credit card:
http://www.alaskaair.com/content/credit-card/visa-signature.aspx
The card comes with a $100 companion fare--if you're traveling from the East Coast, this can be a BIG savings. Around Seattle, some of us (including my husband and me) have each person get the card solely for the coupon. Alaska Air also flies to Vancouver, although it usually transfers through Seattle.
A few notes about the Quick Shuttle:
1. They do have a bathroom, but no place to buy food or drinks, and they don't (usually) make food stops, so it's a good idea to bring water and snacks.
2. If you have someone traveling with you in a wheelchair, they are much better about handling wheelchairs than Amtrak. Just tell them that you need a wheelchair lift. They are great. (so says the woman in a wheelchair.)