Jay, I don't know about the Hearland Event Center, but last weekend I went with two of my sons to the Lancaster Event Center in Lincoln (to see "cage fighting", which was a trip just in itself....I think--hope--it convinced my eldest one to not get into that stuff), and the Center had BIG signs about not having guns--at all!
Talk about feeling naked (clarification: I did have clothes on, just no gun) with a bunch of folks drinking their brains out and screaming like maniacs and crazed lunatics!! But nobody checked anyone at the doors, and just about all I could think about was wondering if law-abiding Aldo is without his piece, yet some nut-head out of his gourd could be carrying!!
Let us know what you find out in GI!