Earn 20 FREE Starbucks Rewards stars when you enter these 4 codes MCATALINH, MCATALINM, MCATALINK,
MCATALINL.
Here is how:
1. Log in to your account,
2. Click on the “Card” tab then under “My Starbucks Rewards”,
3. Then, click on “Register Your Card” then enter the above codes.
* Limit two codes per day.