The Chicago Park District owns Soldier Field and its adjacent parking lots, so "opening the parking lots for a longer period than what is typical (four hours prior to the show start) will require resources from a variety of city service departments during a very busy weekend in Chicago," Serra said in an email. "This evaluation is going to take place over the next several weeks to ultimately make a determination that is in the best interests and the safety of the city and the people coming to the shows."