I don't recall if we actually decide to try and do this or not, but I think parading from somewhere relatively near to Soldier Field before the game would be a great idea. I was thinking along Michigan Ave., maybe from the Fire Front Office if its an appropriate distance (never been there myself), or somewhere north of the whole SF/museum campus.
It's just going to be from the tailgate. It's still a test for eventually being something bigger. See the SF opener prep thread.