Here's my advice for game day after a mixed marriage: Sit apart. Sit with your own kind. Do not watch together. It's cute while you are dating, but afterwards, the game can become a tangible means of expressing all the stresses and issues which are always present in even the best of marriages. Especially if there is alcohol involved, and well, she is a corndog...
Post game, winner gives the loser a kiss, and then it is never spoken of again.
She is beautiful, and I am thrilled for you. Best wishes, hon.