Starbucks will be offering Buy 1 Get 1 FREE Espresso Beverages during their Happy Hour event on Thursday, September 27th after 3pm local time! Valid on size grande or larger. Click this link then sign up now and show the offer code to your barista on 9/27 to redeem. Free beverage must be of equal or lesser value. Offer valid for one-time use. Cannot be combined with other offers or discounts.