There's quite a bit of 2hr street parking on all of the surrounding steets, including right in front of the center. If that fails though, my go-to is the garage under PCC on the other side of the block (entrance on 71st). PCC will validate parking for 90mins with any small purchase, so it's easy to float and get free parking every time.
The street parking under I-5, about a two minute walk. Unfortunately, street parking is a pain in this area!
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