I applied in-person. The process took 3 days. I interviewed at Boba (Riverside, CA) in Mar 2015
Interview
Very easy, not much asked. The store manager comes to interview you. No need for suits, just dress normal. Interview lasts around 10 minutes. They tell you after 4-5 days if you're hired or not. And tell you to come in for unpaid training. (training usually around 3 days).