Agreed. While it may be that 'gambling' in the form of bingo, scratch-offs and the like are inconsistent with the stated missions of drum corps (and even more so, churches), the fact is that it is one of the legacy forms of income for such organizations. Bingo games are, broadly speaking, reliable income, low overhead (assuming you can get a bingo hall on the cheap; otherwise the equipment isn't exorbitantly expensive), easy to start up and easy to staff. Bingo is and has been the 'low-hanging fruit' for an np that otherwise can't be self-sustaining from its' core operations. Bingo traditionally and IMHO doesn't have quite the stigma of more high stakes gambling like slots and table games where the odds simply favor the house. Competition is minimal except in areas where casinos and arcades have been established. Bingo by its' nature can be susceptible to unethical acts though, if there is lots of cash flowing which can be siphoned off by less than scrupulous staff before it hits the books. That is, unless all cash (or credit) is collected and paid out centrally (at the door), and play is conducted only with scrip, chits or tokens. So in other words it's possible to make the games a bit more 'honest'.