Oh.. I didn't know it was 6 hours.. I thought it was like half an hour.. I should probably look these things up before I offer.
It would be 4-5 hours round trip. Which, coming from Edmonton, is about what you would have to do. Then add on traffic in Seattle and near the FEstival site, it would easily add up to 6 hrs. It would be one mighty big favour.
I drive from Seattle and usually pick up a few ppl.
Last year I found out about a couple of guys from Acapulco that was flying into Seattle. I ended up picking them up at a park-n-ride. They paid me to rent a tent, sleeping bags and I did theor cooking for them. It turned out to be a blast.