Bowling Alley? Dorkey's in Tacoma is more centrally located,Pinball arcade that serves food, and has lots of space with tons of pins!
Was there for the first time after the show this year, and rank it higher than Ground Kontrol for overall space and accommodations.
I didn't feel claustrophobic walking around. Only issue I had was the dirtiness of the pins,but that is fairly easy to correct.
Please consider for next year.

The fact they have the Convention in Tacoma every year should speak volumes as to the proper location for an event that represents the whole NW.
However,I do understand that this event must be a big undertaking to organize,and being close to home makes it easier to accomplish.

Best wishes!