What do people here think? Should I shave or not? Will it make a difference?
I’m not sure how the good folks in the CR would have a better idea about the environment in some unknown accounting firm than you do! Since you’re not sure, go back to your rov, tell him that you don’t have a good way to gauge the environment there, and ask how to proceed!
I don’t know how to interview for a large accounting firm, but one universal pointer about interviews: project confidence!
Hatzlachah!