Usually it is good for trips in August-September. The booking window is usually April-June for those who don't get the bounceback promotion the previous year, so you missed it for this year. We are waiting for the first reports to come in to see if they offer a bounceback to people using it this year for next year. When you check in during the promo period there is a flier they give you when you checkin or it may be in the room and they also mention it on the tv while you are staying there during the promotion.