Chances of getting this job.?

This would be my first job. I sent my application in about 2 weeks ago and they called back and scheduled a job interview with me thursday. It's at a place called Rocky Rococo's. It's a small pizza chain, it gets an average amount of business and from what I can tell, they don't have too many employees. There are usually no more than 3 employees in at a time. Assuming nothing goes TERRIBLY wrong during the interview, what do you think my chances are?