Mich. Comp. Laws § 436.1609h

Sec. 609h. A manufacturer or supplier may offer electronic rebate coupons directly to a retail customer after the retail customer purchases alcoholic liquor from a retailer. An electronic rebate coupon issued under this section must comply with all the following: (a) A manufacturer or supplier shall only issue coupons that state a specific expiration date and specific cash refund value on the coupons. The refund may be paid by cash, by check, by debit card, through electronic funds transfer to a bank account, or through an internet or mobile payment account. (b) A manufacturer or supplier shall not issue coupons that make any alcoholic liquor free. (c) A manufacturer or supplier may issue coupons that can be applied to more than 1 specific product sold by that manufacturer or supplier but must state the manufacturer or supplier to which they apply. (d) A manufacturer or supplier shall issue coupons that require the retail customer to purchase at least 1 product of alcoholic liquor to redeem a coupon. A manufacturer or supplier may issue coupons that require the retail customer to purchase 2 or more alcoholic liquor products from the same manufacturer or supplier to redeem the coupon. (e) A manufacturer or supplier may issue coupons that require the purchase of a product other than alcoholic liquor. (f) A wholesaler shall not pay for or participate in the offering of coupons except for providing signs that promote the electronic rebate coupon in accordance with section 610a. (g) A manufacturer shall only issue coupons that may be redeemable after a purchase of alcoholic liquor at all retail locations where that alcoholic liquor is sold.