Appeared to be mid/high 30's, and after back to back losses, I was expecting less peeps. Think they're still in the habit of announcing paid.
The NCAA has a rule for calculating attendance - I have posted it numerous times. It is mainly just tickets sold, but there are sub-exceptions. $1 tix for employee appreciation day or whatever wouldn't count based on the number sold - only those who go to the game with that ticket can be counted. The rule is the same for students who do not pay for tickets.
I have no idea why people are so fascinated by attendance.
People are fascinated by attendance numbers because of the discrepancy between what is announced and what they see (actual). Years ago attendance was mostly a turnstyle count. Announced attendance pretty much matched what was in the building. There was no fascination with attendance then because it was basically what you see is what you got. If people would get their heads around the fact that attendance doesn't mean what it used to, we could all ignore it. But, when they use some new meaning of the word "attendance" it is confusing to many.
As you stated, the NCAA has rules for calculating attendance. And those rules almost guarantee a significant discrepancy between actual/announced that we see regularly at UM home games. All it really means though is that a lot of people who have purchased tickets don't show up at the stadium for whatever reason. They are still counted in the attendance.
Here is the link to FIU's example of
attendance calculation/reporting