My Coke Rewards/Walmart photo offer - 24 prints free w/purchase of 24pk

Save those summer memories forever!  There's a new offer available at My Coke Rewards for free prints:

Get 24 free 4x6 prints with your Coca-Cola 24 pack purchase at Walmart, plus unlock exclusive rewards.  Simply enter your My Coke Rewards code and keyword "Walmart" in the "enter your code" box above* to redeem.

The asterisk is to denote that the keyword actually expires 8/9/12 and there's a limit of one redemption for free prints per member.  I'd imagine that shipping is not included in the free print offer, as it is not included for any prints you might choose as a reward normally.