Seattle has alot of sightseeing. I'd totally ditch the convention! Seattle & I connected a long time ago.
Mount Rainier - Paradise lodge Alot of hiking and early july is just glorious. Glaciers, meadows, a real trip to Paradise. As close as it gets. A must see for JWs & ex-JWs.
Mount St. Helens - Proof that earthquakes & pestalences are close. This is the MUST SEE. It will blow your mind. A must see for JWs & ex-JWs.
Olympic Penninsula - Hurricane Ridge. Look at the internet for pictures. Like "A Sound of Music"! Then, there is a beautiful rain forrest on the other side of the park. Spectacular beaches. Driftwood on Steroids!
Downtown Seattle - Fish Markets, people watching, ferris wheel, cruise ships going to Alaska. Just a neat place.
Rent a car. But, rent it just outside the airport. Take a $30 cab ride to the rental place. You can return the rental to the airport. You will save a bundle that way.
Totally go! But, totally ditch the convention.