AMC Theaters is giving out free popcorn on your birthday.. Offer is valid on any day of your birthday month and will come in the form of a voucher via email when you join AMC Stubs Insider (It’s Free To Join).. AMC Insider members also get other benefits such as free refills on large popcorns, Earn points ($5 off when you reach 5000 points), Tuesday movie ticket specials and more.
