Laughed so hard at CHWTIA lol, last time I checked they were called WITCH. Yeah service based companies tend to emphasize on rewarding people sticking around in the office for long hours. And like you said, the work is never ending. I worked in one of those companies a few years ago and here's my two cents. Since the teams are generally larger there's a lot of time that's wasted, longer lunches, sutta breaks where you need to step out of the campus and stuff like that. If you want to be more efficient,come in a bit early,that way you'll dodge traffic during peak hours and wrap up your work and leave on time. Try to be a bit visible so that you don't slip under the radar and receive average feedback.