Yes, it's 4/20 today...but there's also deals for National Cold Brew Day today! Dunkin Donuts rewards members can get any free cold brew with the purchase of anything through the app. And, from 7AM-3PM - Love Park is giving out 500 cups of free coffee thanks to Central Perk from the Friends Experience! Plus, if you have the Rita's app, you'll get a coupon today for a free, small, frozen coffee!