On 9/29 Buy any M-L-XL hot coffee at Dunkin’ Donuts get a Medium Hot Coffee FREE

This Friday September 29th for National Coffee Day if you purchase a medium or larger hot coffee you will receive an additional medium (only) hot coffee for Free. No coupon required, doesn’t say if it works with mobile ordering or not.
https://news.dunkindonuts.com/new…e-for-free