I was last in Seattle in 2015. We stayed in a really cool area near the stadium (Hotel 1000) for a wedding. Was there on a Sunday, too, when the Seahawks had a home game. The whole area was jumping with fans everywhere hitting bars and restaurants before/after the game. IIRC, I think they closed the road leading to the stadium so that people could party. I didn't go to the game, but we had so much fun.
I really wanted our stadium to go downtown and recreate what Seattle has...