I was encouraged by an FA when I asked about taking a pic of my 777 Suite; she actually offered to take a pic of me
IN the suite.
However, I have been advised not to take pictures forward in the plane, i.e., toward the cockpit.
Also, a BA FA told me that no pics whatsoever were allowed.
In recent past (last 12 months) TG didn't seem to care, nor did JL as in both cases I actually fotographed or recorded FA's in duty.