Technically every other city block worth of land is some sort of native american reservation at this point since they started letting them build casinos on them all over the place. He's probably at the nice one up on I5, or the one out at the beach. I could go check if someone wants to bankroll my entry into the high stakes james bond style baccarat game. Otherwise I'm probably not going to drive over there. sorry.
If ye's stuck in Yakima on the other hand, it's probably too late. he's been there for at least 20 minutes so now he's a contact high meth addict just from the atmospheric vapors.