Where can I get free or discounted tickets to six flags over texas?

Their coupons won't come out until next month. April.

I'm not 100% sure, but I know that a year or two ago when we went (we now get season passes) that we used soda cans, coupons from hotels (we usually stay at the Homewoods Suites, but most of the hotels in walking distance have discount tickets; several of them put "Six Flags Discounts" on their signs), and they usually have coupons at a grocery store called "Fiesta Mart" (or something similiar to that; it has a big parrot on it I believe), but I'm not sure if those places still have them, or whether or not they are out yet if they do.