I believe that it is possible to get the fingerprinting etc done at American Embassies- and seeings as you live in a city with an american embassy, it might be worth checking this out. I'm told that otherwise it currently takes about five hours to get through customs in America, but if you're already on file it is much quicker. I don't have many memories of Seattle, as my visit there was somewhat inhibited by the fact that I'd a fracture to my right ischial ramus (pelvis!) and so couldn't do walking in a big way at all. However, I too would recommend the Experience Music Project, and go further to recommend the fried green tomato cakes in the cafe there. I would also recommend the monorail- connects the Needle and Experience Music Project to another part of Seattle, possibly 'down town'? If you're the kind of person who gets excited at the mention of Docklands Light Railway (haven't linked as site didn't look that great, but for those not in the know it's a bit of the London Underground that goes over ground too) then it's def worth checking out. We sat in the very front seats and felt dead Jetsons-like as we zoomed above the city at high speeds. And I remember gorgeous sun in Seattle, which out of no where turned to heavy rain...and then back to sun. A lot like Glasgow, although the rain was heavier. However, unlike Glasgow, the bits between the rain were hot and pleasing. I was there mid April 01.