There have been tentative attempts to re-introduce fam flights for ATCO's - a friend of mine recently did a EGPF-EGLL trip 'up front' with BA. This was, however, arranged in advance through official channels. The good old days of announcing your occupation to the cheif hosty when you got on board and being allowed access to the flight deck as and when you wanted it are, alas, gone.
I believe that some sort of official fam flight scheme may be introduced after the summer but we will need to wait and see.