Completely agree, CGMB. My earlier post was tangental to yours, didn't make that very clear.
The cost of running a stadium that is used, on average, once a fortnight for nine months of the year must be a drain on resources. Imagine a theatre with two performances a month and full time admin staff, crew and actors to pay. If the twelve thousand seat auditorium was, routinely, only a quarter full for each of these irregular performances, I imagine a reassessment of ticket pricing would be high on the agenda.