Fume
"The problem for cabin crew was that pilots would insist their loved ones should sit in these empty cabins, which caused a lot of friction with passengers who could not understand why they could not be there, but staff of flight crew could"
Fume you really can't help but have a BASSAesque swipe at Flight Crew at every opportunity can you? Was there never ever an instance of Cabin Crew insisting that their loved ones should sit in these empty Cabins?
Was there never ever an instance of the operating Cabin Crew wanting to use these empty cabins for Crew Rest?