You have to "like" Pepsi Max on Facebook.com to print a coupon for Buy one 20oz or 2 liter Pepsi Max, Get 1 Free. (If you have already printed this coupon, you may not be able to print it again. I'm not sure if it was reset. I have more than one computer so I was able to print it again.) Now wait for Thanksgiving, because CVS will have select Pepsi 2 liters on sale for buy one, get one free. (Front page of their Black Friday ad, HERE)
Then use the coupon combined with the sale to score a few free 2-liters of Pepsi Max. This is a great deal since it will be Thanksgiving and drinks are a must!