Bah, beat me to it. Go ahead and update the OP with this information and that should cover all the technical stuff. I have verified that you get a code, but I am saving it for now.

Those that have Battlefield 3 Premium memberships should be getting an email for a 50% pre-order code for the PC download version off Medal of Honor: Warfighter, making it $29.98 instead of $59.99. Clicking the "Get your code" button on the email takes you to Medal of Honor: Warfighter code redemption page where you have to input your Origin ID (email) and password, before accepting EA's privacy policy and terms of service. Then clicking the "Verify" button, it spits out a one-time use code that expires on November 23rd.