Advice for a 1 year Intern/placement Analyist in PWM - BB

HI there,

this is my first post on WSO,
I’ve just got a 1 year internship/placement between my penultimate and final year of my degree at a BB (think JPM/GS/MS) I was wondering if you have any advice for someone about to undertake a long internship in PWM at BB?? Any advice is greatly appreciated from what to wear, to how to act etc.

many thanks