I agree there's probably more than are needed in the US, but I LOVE that htere's one in seattle.
Considering how many were in the US last year, I don't see how anyone can complain that there's more here this year. Especially if they alternate back and forth every other year.
I do think they really need to have one in the AU/NZ area though.
Ideally there should be probably 2-3 in the US, 2-3 in europe, 1 in australia, 1 in south america.
And 1 in Vancouver, BC
. Would be closer for you than Seattle...and you won't have to drop $150 just for entry.