It’s funny that you mentioned how long you keep the expired offers on hand. About 2-3 years ago a local casino in Michigan ran a promotion called “match this” where they accepted and matched ANY offer from ANY casino and would give you premium play for the dollar value of that offer and added it to your player’s club. The first week that the promo ran there were very limited rules on it and they were not prepared for what people were walking in with. Since they did NOT have many rules when it first started they accepted old and expired offers, (it didn’t matter if your mailing was 2-3 years old) and there was NO limit on what you could bring in or how many offers. People were dragging garbage bags from their cars into the casino and waiting in line at the player’s club. Sometimes it took 45 minutes to an hour for them to add up your offers and add $7000-$8000 worth of premium play onto your card !!! Obviously the rules changed the first week and they then limited you to $500 a day !!!! Then that changed 3 weeks later to $100 a day, and then eventually they eliminated all expired offers and it ran 3 times a week then…. Needless to say, my new car got paid off during that promotion with 28 consecutive daily trips to the casino !!!! Ahhhh, the good ole days when things weren’t so sophisticated, as they are now . . . 🙂