FREE Parking
Although, officially, the posted parking rates said 0-1 Hour: $5.00, apparently the Washington State Trade and Convention Center has some minimum amount of time that you can park there for free. I don't know what the time limit is, but I just ran up there on my lunch break to pick up my PASS registration materials and when I came out to the machine to pay it told me that no payment was necessary. I was probably in and out within 15 minutes (no line in the middle of the day on pre-con Monday, yippee!). So, if you find yourself in a hurry to pick up your registration, keep this option in mind.