By George Merritt, The Denver Post Knight Ridder/Tribune Business News
Aug. 28--They will come from all directions in cars, buses and trains.
They will carry sports tickets, beer coolers and wallets full of money.
They are spectators.
And a tidal wave of them will inundate downtown Denver over the weekend.
Hundreds of thousands of people are expected downtown for the Broncos' final preseason game Friday night, the Rocky Mountain Showdown between the University of Colorado and Colorado State on Saturday, and three days of