For those who get to to the post quick enough, you’ll see a movie trailer for Letters to Juliet. The trailer will start automatically, and you’ll be asked to sit through at least 15 seconds of it to qualify to receive one free Facebook Credit. You can close the trailer at any time after the 15 seconds are up, provided you click on the “Get Reward” button to activate the acceptance of your free credit.
After all is said and done, you’ll be notified via an in-game pop-up that you’ve received your free credit, which can be used immediately in any game that requires them for premium item purchases.
Head over to the game’s page to make sure you get your free Facebook Credit while it’s still available.