I'm from the Seattle area myself. If you want to check out Neo related stuff, your best bet is Robert Wallace. I've dealt with the man quite a few times. Mostly in person. Real Awesome guy! We hook up sometimes.
Here are a few Neo Arcade related areas in the greater Seattle area:
-Gametown in Tukwila, WA
Has all the great Neo Geo games: KoF 98, 99, 2002, 2003, SVC Chaos(for those who love it), Metal Slug 3, ROTD. They have these games running on dedicated 4 & 6 slot MVS machines. Open really late. Definitely a nice place to hangout.
-Famcom in Bellevue, WA Owned by the infamous Loki
BIG video game collection store here. You name the system, he's got it. He has a few cabs in his store store as well. Be prepared to have money if you decide to go. Lots of nice stuff.
- Kicks-Arcade inside Lanwerx Bellevue, WA
kicks-hobby.com Check their website out to find the Arcade games they have. I believe they have: MOTW & KoF 2003. Lots of nice competetion here. It's an import shop as well.
As you notice, I'm really BIG on the fighters. Well, that's about all I can think about. You can always battle out Robert or me. I live 10 minutes away from Sea-tac international Airport. I have a few cabs as well. Anyway, pm me what you think. Have fun in the Emerald City this weekend.