Peet’s Coffee & Tea has a coupon (print or show on mobile device) for 50% off any beverage Thursday through Sunday! April 20-23, 2017.
Details in wiki. Store locator here .
Also, in case you need beans while you are there, here is a coupon for $2 off People & Planet coffee beans
Expires April 22, 2017. People & Planet coffee beans: Guatemala San Sebastian, Uzuri African Blend, Gaia Organic Blend, and Organic French Roast.