Tracked by Evreward since 2022, Robert Mondavi Winery offers coupons, cash back rebates and rewards, with savings as high as 20% off. Robert Mondavi Winery discount coupons are rare, only available once or twice a year. Even when Robert Mondavi Winery doesn't have a coupon, you can always get up to 20% cash back, and other great rewards, with every purchase.