First Game!

Hello all! My buddy and I are coming up from Columbia, SC for my first Hawks game this fall(The monday night against the Lions). i have been following thes eahawks since 2003 and have been wanting to attend a game ever since. (i have been to the Seahawks v panthers game the past couple on char. We are staying at the courtyard in downtown Seattle. I was wondering, what are some must sees while were in Seattle. We plan on attending a M's game as well head up to see The university of Washington. But looking for other things todo. We are also looking for good tailgating spots, quite possibly looking for people to tailgate with.And what is game day like. My only tailgate experience is tailgating at Williams-Brice Stadium at The University Of South Carolina. I really look forward to the trip and hopefully will be back for more! Thanks in advance! Go hawks!!