I applied in-person. I interviewed at Powder Shaved Snow (San Francisco, CA) in Apr 2019
Interview
the interview process was brief and mainly on my availability of hours. they asked if I was a student and about my previous experience in the food service industry. they asked if I had my food handlers certification from the state of california.
Quite simple, asked about availability and experience. No need to dress super formal, just wear decent clothes and you'll probably get the job. You meet in the store and have a short 10-15 minute interview.