If you’re already enrolled, “simply update your DD Perks® profile with your mailing address and add your birthday. Then we’ll send your coupon good for a free coffee, latte, tea, Coolatta or hot chocolate straight to your mailbox.” Starting May 3, 2010, enrolled guests who have provided us with their birth date and have opted-in for email communications will receive a Birthday Perk coupon for a free medium beverage of choice for their birthday.”