If you had a car Uber would be too expensive, the
http://www.quiltbarn.com/ Quilt Barn in Puyallup had a great display at the big sewing show a couple years ago when I went. They have a list of local guilds on their website, perhaps you can contact them for advice.
If you were coming at the end of May, there is Quilt Canada in Vancouver. You could take Amtrak from Seattle.
Or take The Clipper to Victoria, you can check out Calico Cupboard, Bib and Tucker and Cloth Castle in the Victoria area.