Be forewarned, Arbys does not require franchises to accept coupons or participate in the same promotions as corporate owned stores. In fact they can elect to not carry some menu items. And there is no way of telling if a store is a franchise or corporate store until you are at the register and they refuse to honor the coupon/promotion. If you get turned down, send a letter to complain and maybe they will force franchises to offer the same deals.
BTW, if you are in Milwaukee, avoid the Arby's on National Ave. just off Hwy 100. They never honor any coupons/promotions.