20% off meal with full purchase of an adult's meal

Good 10/23/18-11/30/18. Limit one per customer. Cannot be used with any other food, drink or meal coupons. Only valid through given dates. Can only be used once during this duration. Works with meals only cannot buy a single item and get 20% off of a meal. Must buy an adult meal to get discount. Buying a kid's meal will not warrant this coupon to be used.