Part of me really hates them looking into this, but part of me understands it is a 100% valid question. They do need to know if you are one of those guys that simply cannot miss the superbowl.
What this industry desperately needs are no questions asked personal days... something most companies have. There's this funny thing called life that makes it so that you sometimes cannot come in, and you're not sick.
It'd be easy. Block the dozen or so major holidays. Everyone gets one or two a year. I'd not even care if it was unpaid. The requirement is to give a minimum of 24 hours notice prior to the sequence start, and you're off.