Being such an old thread, thought I would refresh it with the release from Port of Seattle:
Enjoy Seattle, Luggage-Free! It’s Complimentary, Convenient and Secure.
The Port of Seattle is pleased to offer complimentary luggage transfer from the ship to your airline at the end of your cruise. Enjoy hassle free disembark with Port Valet.
It’s a complimentary luggage service sponsored by the Port of Seattle and our cruise line and airline partners. While on board your ship, sign-up, check your luggage and receive your airline boarding pass. Your luggage will be transferred directly to your airline and checked to your final destination.
No need to rush to the airport, so enjoy Seattle and travel luggage free!
How does the service work?
1. Enroll Early!
Once you're on the ship complete the enrollment form found in your stateroom. If you have questions about eligibility, check with the guest services team on your ship. It's best to enroll during the first few days of your cruise.
You can use Port Valet if you are flying with these participating airlines:
2. Drop your luggage
The night before your cruise ends, you’ll receive your airline boarding passes and special luggage tags from your ship’s crew. Set your bags outside your cabin that evening and the ship's crew will pick them up.
Your luggage will be securely transferred directly from the cruise ship and checked in with your airline all the way to your destination airport. You don’t have to do a thing.
3. Enjoy Seattle
Capitalize on your freedom and spend the day exploring Seattle in its most beautiful season. Visit Seattle can help plan the day. Check out the 2-hour, 4-hour and all day self-tours at:https://www.visitseattle.org/things-to-do/cruise-information/pre-post-cruise-activities/
4. Skip check-in at the airport
When you arrive at Sea-Tac Airport, proceed through security and board the plane. Your luggage is already checked to your final destination!
5. Track your luggage
You can track your bags at the Port Valet website: https://portvalet.maketraveleasier.com/
Explore Port Valet