Here are the details:
1. Pick up a holiday beverage tasting card from the barista at any participating Starbucks location (I'd call ahead), while supplies last.
2. Collect a sticker each time you purchase a holiday beverage during the promotion period which runs November 19, 2012 through January 2, 2013. Holiday beverages included all versions (hot, iced, and blended) of the Caramel Brulee Latte, Peppermint Mocha, Eggnog Latte, and Gingerbread Latte.
3. Collect 5 stickers and you can redeem the card for any Grande handcrafted beverage of your choice for free. Cards can be redeemed though March 4, 2013.