Don't we have to give each school a 4,000 ticket "allotment"

I always thought so.
I thought visiting teams tried to sell as many as they could (X), and then they returned the unsold portion of the allotment (4,000 - X). [Apologies for "fancy/fuzzy math".]
I find it hard to believe that they only "requested 2,200" - was this over and above their allotment?
On the otherhand, in my experience I'd say that Marshall and San Jose State brought more fans than k-who annually does.