I cannot comment as to whether or not the cameras record.

Compared to the camera at the front of the A380 F cabin which has a limited view into the suites (in particular if you are in a window seat past after row 2), the cameras on the new F point into each individual suite. Taping over the camera is not an option given they are on the ceiling... but you can always close the door

In addition, while the cameras throughout an A380 are fairly obvious, unless you were specifically looking for them, the cameras are well camoufalged (or "integrated", to give EK the benefit of the doubt) on the new 777. I have been lucky enough to fly the new F 20+ times now and I doubt I would ever have noticed the camera had I not seen the crew's screen.