I applied online. I was never actually officially interviewed; I just kept stopping by and bugging the manager and calling her until she hired me. However, it took a month to get me on payroll! It's a good thing that I really wanted the job, or I would have simply given up. To be fair, though, I had already worked there before and had good references (two of whom had been the store manager and assistant manager at that very store), so I guess an interview wasn't really needed.

Mostly just casual conversation, background, and previous experience. Very low key and low stress. It was only supposed to be a half an hour, but quickly turned into a considerably longer experience.