S.C. Code Ann. § 61-4-736

A manufacturer of wine, vintner, winery, an importer, or retailer may offer or sponsor coupons and rebates to a consumer for the purchase of wine. Coupons and rebates include, but are not limited to, retailer instant redeemable coupons, mail-in rebates, and coupons and rebates offered or redeemed through any electronic means. Manufacturer, winery, vintner, and importer coupons must be made available upon request to a licensed retailer. A wholesaler is prohibited from participating in the procurement, redemption, or other costs associated for any coupon or rebate for wine offered or sponsored by a manufacturer, winery, vintner, importer, or retailer. A winery, wine manufacturer, vintner, importer, or wholesaler is prohibited from offering or participating in the procurement, redemption, or other costs associated with paper instant redeemable coupons and scanback coupons for wine in this State.