My teenage son and I are traveling from SNA-YVR on 7/4/08, to catch a cruise in YVR on the 6th. I will use AAdvantage miles as a partner award on Alaska. This opens the possiblity of a stopover in SEA on the Fourth, then going up to YVR on the 5th.

I'm very familiar with SEA but my son has never been there. We will see the usual stuff like the Space Needle, EMP, and Pike Place.

Is this a good plan, or will the combination of peak toursit season, a holiday, and locals coming to see fireworks make things so crowded that I should save it for another trip?

Thanks!