I have been working at CBS full-time (More than 10 years)
The Studio is a great work environment, all focused on servicing the productions.
In my opinion there are no Cons.
I applied in-person. I interviewed at CBS.
Brief interview process, two rounds of interviews, both behavioral and technical in content. Met with the Head of HR, group director, and an analyst. All around good process, did not compensate for travel to the interview.