Can you explain a little more about this? It sounds so cryptic. What were/are the cultural touchstones?
The Space Needle and the creaky squeaky Monorail and of course Sylvester are thankfully still there and going strong.
Both of the events you mentioned still seem to exist, in some form.
It's like when the NHRA top fuel drag racing comes to down. It lasts 3 days, with the finals on Sunday. I go on the preceding Friday. Far, far fewer people attend, and it's much more informal. You can park within a reasonable distance. You're not swimming constantly in a crowd. You can watch the mechanics at work, and even talk to them. There's no big crush in the grandstands. It's much more informal, unstructured, and with little need for crowd control. And yet there's still all the action.
On Sunday, though, I stay away.