Volly's 1st post was in the 4 o'clock hour...so she was in the stadium at least 1.5 hours before kickoff, correct?
A lot of people show up about 20 minutes before kickoff to see the band, running through the T, etc.
There needs to be something for the fans like Volly, who want to show up early, to entertain them. If there's a former player spinning tunes in a DJ booth, great! There's absolutely nothing wrong with wanting to get fans into the stadium a little earlier. That means more revenue in concesssions.
There will still be those that arrive 20 minutes before kickoff and the DJ booth is gone. They wouldn't even know it was there.