Carvel Coupon: Buy One Get One Free 08/29/2014 by Nina FTM may earn a small commission via affiliate links in this post. Read our full disclosure policy here. Here is a Carvel coupon good for Buy One Get One Free Classic Sundae (soft serve only)! This coupon is valid till 8/31. Other Posts You Might Like:Latest Printable Coupons 04/19: Save on Cat Chow, Ocuvite & MoreFrozen Foods Coupons: Save up to $19Pet Coupons Worth $21: Save on Beggin & MoreCoupon Deal at Walmart on Aveeno Baby LotionMeat Coupons 04/03: Land O'Frost & More