Here is how to get bonus MyCoke points! 

Log in to  MyCokeRewards and enter one of the Walmart codes followed by 3 Coke codes. You'll see the points for your Coke codes, but your 30 bonus points will not show up in your account for 48 hours. There are 7 different Walmart codes and you can use 3 Coke codes with each one per month

Sandwich

0020271800000
0020270500000
0020275200000
0020272700000
0020279200000

Pizza
0068113171535
0068113171534

Chicken
00681131917750068113191768