You will get them at CS restaurants at anytime. You don't need to buy any specific food items or total. You can use them on any merchandise except alcohol, tobacco, electronics/DVD/CDs, tickets, gift cards, Disney dollars and anything else on the coupon. And it cannot be used combined with other discounts. That's why I've been giving mine away to random guests. And at the locations listed on the coupon. I'm just saying this because I work in merchandise at one of the stores that take these coupons. Please don't try to push the CM to use the coupon outside of the time frame it says on it. I've had people come in after dinner and try to use them because they were leaving the next day and wouldn't be able to use it.
I have gotten the coupons during busy times, Thanksgiving through Christmas and over the summer. I'm not sure when the next one will come out.