@nosleep135
Thank you. I'd love to share my experience with you. First, congratulations to you too on the office interview, as cook7166 said, if you got the office interview, the job is yours to lose. So having a winning mentality going into your interview is critical.
I was interviewed for a tax full time position, so my questions might be different from what you may be asked if you applied to audit, risk assurance or advisory, etc. I had two partners and one director interviewed me. Overall, it was very laidback and relax, mostly conversational topics, e.g. why tax? why pwc? why this office? what do you do for fun? etc. Some behavioral questions I can still remember were related to multi-tasking; how to deal with deadlines, team-work, and how do you manage stress, etc. Sorry I'm unable to be too specific as I cannot recall any specific questions, but overall, it was very conversational.
You must have questions prepared to ask. I asked questions like what are you looking for in a candidate? how can I get ready for a position like this? what do you like the most about the firm, about the office? etc. So, just be yourself and be prepared for them to get to know you, and they are expecting you to get to know them as well. Good luck to you and keep me posted. Thanks.