Great idea! The few of my graduating college seniors who have never held jobs are not prepared for the real world. I wouldn't stress too much about the interview for that particular job. They really just want to know if you can get along with others, maintain a consistent schedule, show up on time, and that you have a decent level of responsibility, work ethic, and integrity. Smiling and staying positive during the interview will show them that you're a nice person with whom to work. Congrats on adulting!