I did a walk-in to ask if they were hiring and to turn in a resume. The store manager told me they were hiring for the season and that I could apply online. I told her I would apply online later that day and turned in a resume. They called me within a week for an interview. They did not say, but it was a group interview.
My interview was at 3pm and about 7 candidates showed up. The interview questions were exactly as the ones posted on this website; however, the store manager did not ask the hard questions. She asked questions about customer service and behavioral situations.
The group interview may seem really formal because the manager shoots a question and candidates take turns answering one by one. My advice would be for you to break that formality any way you can, and show enthusiasm. Do not show up with things-to-say memorized, instead show up prepared to have a real conversation about what type of worker you are. And keep in mind that what you say is not as important as exuding that you are a likable, agreeable, confident, positive person.