Whether you prefer it hot or cold, we’re spilling the beans on where you can score a free coffee on Tuesday! RELATED: Try these 10 Jacksonville coffee shopsWith Sept. 29 being National Coffee Day, several chains are offering customers a free cup of coffee to celebrate the occasion. Rewards members will receive a free coffee AND one free doughnut. Duck Donuts is offering customers a free coffee (any size hot or iced) with any purchase7-Eleven is offering all 7-Rewards members $1 any-size coffee. Wawa is giving customers a free cup of coffee of any size just for stopping in!