When the performance was over we walked around to find a place to eat (it was dinner theater, but we didn't pay the $50). Passing many clubs, we eventually settled on Trattoria Mitchelli. I think we were influenced by their being open until 4 AM.
I don't think that I'd ever been to Pioneer Square at that time of night on a weekend so I found all of the clubs unsettling. All of the people waiting in line to get into places. I think there were even some raver kids. I guess the strange part is that I never thought about all of those people existing.