You will show up to the store, and the manager will sit you down and ask you typical minimum wage-type questions about how you would handle certain customer scenarios. The interviewer will also probably ask you to reference a time where you had to work as a team to complete a common task. Since this is primarily a high school job, an easy answer to that is to make up something about a group project. Lastly, don't sweat the interview. It's Dunkin donuts; and chances are if you're having an interview you're going to get the job.