The CCTV in F is only for when the crew has to be seated in order to have a view of the aisles, that's it. No F suite monitoring, no intrusion. Besides no attendant has the time to sit and watch when they have to prepare meals, clear trays, prepare for their training etc.

The video resolution is quite poor, displayed on a 6 or 7 inch screen which is a metre away from the crew seat facing it, add to that the fact that the cabin is dimmed for take off/landing and you'll get a pretty good idea of the stuff they can see, a faint view of the aisles -barely.