You can enter up to 40 times a day for a chance to win the My Coke Rewards Boxes of Joy Instant Win Game! Ends December 31, 2015.
You can get a free code by going through this link here.
Free Method of Entry: During the Promotion Period, visit www.mcr.com/holiday and follow the links and instructions to register or log in to your MCR Account. Then, Click Here and follow the links and instructions to receive 1 Instant Win Game play (a “Free Play”) without having to make a purchase. You must use the Free Play within the browser session or you will lose it. Once you use the Free Play, you will advance to the Instant Win Game, receive one Instant Win Game play, and be notified if you are a winner of one of the Instant Win prizes.