I grew up with Dunkin Donuts and I LOVE them, I will choose Dunkin over Starbucks in a second. Unfortunately the service here is lacking. If I were reviewing the coffee and drinks this would be a 5 star.
The service is friendly, and when we ever had an issue it was indeed professionally solved. I think the there may be issues with their speaker system, we have asked for hot coffee and gotten iced more than once, instances like that. So if you are on your way to work repeat your order and clarify they are in the same boat.
Otherwise clean and quick. I will keep going, I just make sure they hear me correctly in the drive thru. It could be the best advice here! :)