I am only a volunteer at our facility but we play twice a week, which was very gradually cut from the every day that the residents wanted. I agree with the activities director that twice per week is a good amount; it gets the players to try different things the other days of the week - things that might stimulate their minds or bodies more.
This leads me to my own question: DO ANY OF YOU DO ANYTHING ELSE DURING BINGO BESIDES CALL NUMBERS AND AWARD PRIZES? Bingo just seems so BORING. Have any of you tried anything like reading a joke every once in a while, or leading a discussion at the same time, or anything else at all? If so, did they like it or not?
Back to your original questions, we charge 5 (real) cents per card per game, and 10 cents per card for the very last game (fill the whole card). There is no maximum on cards, so we have one resident who usually purchases 6 to 8 cards, one who purchases 4, and the rest purchase one or two. 5 cents per card makes it so easy to afford more cards, and yet some people don't do it on principle to make it more fair (which doesn't work unless everyone does that, which is obviously not the case) or because they are not quick enough to mark more than one or two cards (also not fair). I think everyone should have the same number of cards - say, two - and residents should be asked how much they'd like to pay per card in order to get the type of prizes that would then be available. (You'd have to do research first to be able to say to them something like, "At ten cents a card, the prizes would be things like a, b, and c; at 25 cents a card the prizes would be things like d, e, and f, and at a dollar a card the prizes would be things like g, h, and i." Or you could try having the first few games be 10 cents a card with smaller prizes, then the next few games 25 cents a card with bigger prizes, and the next few games a dollar a card, with bigger prizes. The very last game might be two dollars a card. I think it's good to have a selection of prizes to choose from, so they can get things they actually like. I think that candy should be at a minimum, if at all. I'd go more for things to do or little collectibles, such as crossword puzzle books, trivia books, puzzles, a pennywhistle, an art or craft item, tiny figurines or stuffed animals or dollar-store vases with artificial flowers, or even coupons good for services (that would have to be made available), such as a 10-minute hand, foot, back, or head massage, an errand to be run for them, a lesson in something a staff member is good at, etc.
As far as cutting back on the number of times without a riot, I'd cut back gradually, and be sure to replace that time with something REALLY interesting and different.
I can't remember if you had other questions, and this is my first time on this site so I'm not sure how to go back to your question...but I hope I helped a bit!