Hour and a half before .
Always 90 minutes before events. Go in through the Atrium it is opened earlier for food & beverages....Parking costs too !! Went to Hawks game Tuesday.
Not sure but bring plenty of $ for all other incidental costs. Very expensive. And it took us over an hour standing in the cold to get a cab after a recent bulls game so b sure u have a ride or at least warm space to stand and wait.
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