Wouldn't a tradition perhaps need to be "traditional", as in, it's been around a few months at least? Maybe even decades?
Things change.
I think perhaps a more useful list would be "cool things to see and do at every venue". If you're lucky enough to see a game at X, here's what you should try and see/do.
I was at a game in Knoxville and I had not really preplanned anything, we just wondered around a bit and didn't see much, yes, the boats on the river were pretty neat but that was about it. I should have spent a bit of prep time checking out what there was to do/see.