0 September 28, 2016 Cinemark Theaters : Free Medium Popcorn Save at Cinemark Theaters Today: Free Medium Popcorn Valid on 9/30/16 MORE INFO Tell a friend!SharePinShareTweetEmailDownload the Cinemark app and get a coupon for a Free medium popcorn valid on 9/30/16. 0Did you catch these deals?Big Wall Décor Coupon : 20% off Sitewide code BUDDY20TechSmith Coupon : 15% off Sitewide code MBB1525% off AARP Membership : Only $12 + Free Pickleball Set or Free Insulated Trunk Organizer