By the sound of all this, your booster club is probably out of compliance with the IRS.
Bingo is usually only allowed to be operated by 501c3 nonprofits. These booster club nonprofits can not technically force anyone to volunteer or buy out- the money raised must be equally shared regardless of participation (you can shame people Into volunteering but not deny them funding)
Our club used to do bingo as well - got audited few times by IRS due to whistleblowers.. bingo was once extremely profitable but became really a huge drain on human resource for very little profit.