Corporate whore lampy here.
Sometimes it's bastard hard work. Sometimes I can cruise. I'm full time (technical manager), so to an extent I'm directly in line of the shit fan, but I try and stay one level removed from client facing, so there's always someone I can pass the buck to. That said, I'm employed to "just f'ing make it work", and if it doesn't then it's my problem to sort it. Can be a nice challenge, can be a right bitch.
When I do work hard, I DO absolutely earn every penny they pay me and then some – complete physical and mental exhaustion. A reasonably understanding company means that I can sometimes cruise ye interweb without too much issue in worktime as a result.