Like others have said: EXTREMELY SLOW service. Avoid at all costs, unless you go through the drive-thru. They seem to get priority over those ordering in the lobby.
Today took 15 minutes to get a small vanilla cone!
DQ is famous for their frozen treats and they couldn't even get a simple ice cream cone out in a reasonable manner. Spoke to the cashier and was given the excuse that it was a trainee making the cones and Blizzards. A man carrying his small daughter, who ordered immediately after me, walked out because they got sick of waiting for their dessert order. I complained to the manager who was manning the drive thru, he barked out orders to the 2 kids operating the soft serve machine. They seemed to just ignore it. I was fuming at this point and practically yelled at the manager that I just wanted my damn cone! He finally had to do it himself. I called the owner, whose number is listed under the store hours on the front door. I told the Asian man (I'm Asian too) how long the order took and that the ones being trained on the soft-serve machine need retraining. He apologized and said he'd make sure to make it better for our next visit. Unfortunately I won't be returning to this establishment.