I'm bring some non-member friends with me from Vegas to the BYU-Utah State game this year and they might use some language that you don't want your daughters to hear inside of LES. They won't be over the top obscene like drunken yewts but their normal vocabulary consists of words some of you will not like.
Just think of this as yet another BYU football missionary opportunity and try to be welcoming despite the few swears that are bound to come out of their mouths during the game.