S/T Superday Tips Needed!

I was invited to a superday out of the blue (fast tracked without initial phone screen bc diversity) and it's in two days! Does anyone have general advice? What should I focus on reviewing? I don't know much about S/T in general - I have started reading the vault guide. You might be questioning why I applied - I went to an info session from the firm and they had someone who had a similar background as me in FX Sales come chat and I was surprised because I thought it was typically male dominated (maybe it is, but she gave me the impression that you don't need to be a finance major and a male). I'm not sure if I fit better for Sales or Trading - while I do like to be challenged in class, I'm not great at math.

I had done a phone screen for a boutique s/t firm but didn't make it to the superday round, and the phone screen was all behavioral questions - why s/t, why this firm, strengths, weaknesses etc.
I'm wondering how to best prepare to my extent for the superday, because I bet there are technicals, and how to stand out from others despite my background- I have a liberal arts background but no prior concrete s/t or ib experience and don't have student investment fund experience, mostly leadership in other campus groups. As a result, I feel like I'm not as shiny of a candidate next to someone from nyu who has this background.

I have been looking at markets a little more than a week (because that phone screen was recent), but that's not enough.

background: I am trying to do econ-stats at a women's liberal arts college and break into finance - sales and trading seemed like a good option because it's more academic (because it focuses on markets), and went to coffee chats with BB s/t team and I agree with their opinions that it's more challenging, has a macro lens (for FX, FI) which I have some background from my macro class, and has a much better work/life balance versus banking.

What are also some important questions to ask these interviewers, besides their day-to-day role? I've never done superday before so I'm not sure what the etiquette is and I don't want to ask a dumb question that will reflect badly on me.