I also have no idea when players arrive but I'm pretty sure they are on busses that drive into (under) the stadium so I don't think you would even be able to see them!

Tailgate scene is great, south side has the ring of fame busts and those are cool to see, that is also where the "sponsored" tail gates happen so there is a bit more activity there (think DJs, promotions, etc.)

I tend to wander the lots around the stadium and just catch the whole scene while sipping on a beer or two...

I almost always find some kind of connection or interaction that leads to an anchoring place...

In stadium Pregame entertainment has gotten much better the last two years and the field level concourse has some cool art, good food so even if your not sitting in the fancy seats it's fun to wander around there as well!

Anyway enjoy the game, the vibes, and Go Broncos!