Asking an honest question here.. is there are huge difference between having 25,000 fans and 15,000 fans as far as mitigating the virus goes? If everyone is wearing a mask (as required and failure to do so will be grounds for removal), how much of an effect will that extra 10,000 fans have?
Just looking at the #s I'd imagine ND is significantly more spaced out with 16k in normally 80k seats as opposed to ISU with 25k in normal 60k.
In many of these college stadiums the typical bleacher seating spacing is much more intimate than sharing a twin size bed with someone.