You need 50 points in order to get the "buy one night, get the second night 50% off" coupon. To give you a point of reference, the large bags of Lays chips are generally worth 10 points each. Some bags are marked as "double points", meaning you get 20 points from each bag purchased. So 2.5 large bags of Lays chips saves you about $100. Not a bad trade-off, and you have snacks for the car ride to boot .