Most important rule of GM-ing, do not over-prepare details, keep a vague outline and let the player figure out the details.
At best, the PC will just find another solution that the one you ignore (why fight the guard when you can bribe/blackmail them) or even they’ll ignore huge part of your scenario.
Be ready to talk about anything mentioned in your CV.
HR may-want to evaluate whether you’re fluent in English by having some small talk about your hobbies, a hiring manager may also be passionate about basket-ball and looking for a new member in the corporate team. Also, in some case, hobbies may even make some link with the position you look for, let’s say that you’re responsiblity involve giving training, an amateur acting experience shows you won’t be afraid talking in front of 20 persons