At the last game, a large youth choir of about 30-40 kids sang the national anthem. All those kids and their parents and leaders purchased tickets to the game to get in, totaling about 150 tickets. Many of those seats were in behind the goals. So, when Sally Soprano and Allison Alto are done singing the anthem, and not really interested in basketball, they run around in the mezzanine and other areas instead of sitting in their seats. Others may leave shortly after the anthem, with their 2 parents and 2 siblings, leaving their empty seats. So, that probably led to at least 100 empty seats last game because the people either a) left or b) were walking around playing or visiting. FU got money for the seat, but they can't make people sit in them or stay for the game.
Just pointing out a little detail that might not be considered.