FREE Beverage for Your Birthday & Joining at Dunkin Donuts Posted On October 21, 2019 Sign up for the Dunkin Donuts Perks and you will receive a FREE Beverage of your choice! You’ll also get a free drink on your birthday and another free drink for every 200 points you get. Free drinks include any Dunkin’ Donuts iced or hot coffee, tea, or latte, hot chocolate, or Coolatta.