The suggestions from TK are somewhat lacking, and are mostly IN Seattle. As our ceremony will be in Federal Way, do you know of any closer outdoor venue options?
Also, how far is too far to ask guests to travel to a reception?
P.S. The whole renting a bus thing isn't really an option.
Re: Washington (Greater Seattle area) Outdoor Wedding Venues?
TK's venue selection sucks....Try wedding wire, they have a ton!
If you could tell us your budget for venue and approx number of guest and what kind of "feel" you are going for, it will probably be easier to suggest venues
In Kent/Federal Way off 272nd, there is an outdoor venue called Sanders Mansion. http://www.sandersmansion.com/
I know there is a winery in Auburn.
I honestly can't think of any venues actually in Federal Way unless you do like PP said and do a park. There is lots of options in Tacoma, which I really don't think is too far....but that's my opinion.
If you give us more info, we can help more.