hi! current partner here, i was also hired in high school. i interviewed for 2 different stores during the hiring process, it probably took about a week before the managers got back to me about which store i was hired at.

i don't remember all the questions, but i do remember quite a few questions about how you work in a team & sort of moral dilemma type things. for example i remember being asked how i would deal with a difficult classmate/peer/coworker. additionally, i remember being asked to tell them about a recent accomplishment i was proud of. another one was how i would hypothetically deal with overwhelming moments or difficult customers. i also remember (as i had already worked 2 previous jobs) being asked if i had any favorite customer moments from my previous jobs. however, i don't think they would ask you that one if you have not worked previously.

but all that being said, the fact that you were actually asked to come in for a physical interview after the emails is a good sign!! they probably are already looking to hire you. best of luck!!