PwC Intern Overtime

I’m going to work for PwC in a month and a half, I’ll be near Washington DC. I will be doing a tax internship and I requested Financial Services because I heard they work a ton and I’m hoping for OT. I know tax internships last longer than audit, and I’m trying to earn as much during my internship as I can. How much overtime can I expect as a winter FS tax intern? Should I push to enter audit after my internship? I figured I would stay in tax because most people lean towards audit. I’m making about $27 an hour.