I was looking at their homepage and they have a bit of space https://www.alliantenergycenter.com/
They have pavilions too for cows and horses..... so may there is a new event coming up next year that we all need to work on.... throw the cow/horse as far as possible
or a milk race
or pick up the biggest turd you can find
I take most of it will be the Veterans Memorial Coliseum or at least the final day, up to 10,231-person capacity depending on the set up of the stage.
I wonder if they can open the roof, i mean that is part of the games and the atmosphere.