We emailed Winn-Dixie for their coupon policy. They were not able to send a coupon policy, but instead provided a few notes. Since coupon policies can change frequently, take this as a starting point, and confirm details with your store.
Winn-Dixie Coupon Notes:
Winn-Dixie will honor store coupons and manufacturer coupons, these types of coupons are useable in any chain where the item is sold. Winn-Dixie does not honor other store coupons. Coupons are handled per the instructions stated on the coupon. No outdated coupons or coupons with missing date info are accepted.
There are times when Winn-Dixie will double or triple coupons, this is done randomly and will always be noted in the flyer as well as the store where the promotion is going on.