Linuxgal, quite correct, well picked up about the cabin crew side of the manual.
Will be interesting to see if the cabin crew get away with this...
I remember an incident a while back at Comair, where my wife was flying as cabin crew. The cabin crew were at the end of leg 2 of a 4 leg flight. and it was clear that capt's discretion was going to be needed to complete legs 3 and 4 due to delays. The problem was, a new set of flight deck crew took over for legs 3 and 4, and the Capt. decided it was ok for them go into the 3 hours Capt's discretion. Leg 2 had landed back at base, and I've been told by certain training capt's that to leave one's base, knowing one is going to go into Capt's discretion, is not only wrong, but it is illegal! My wife felt that it was quite unfair for the capt. to decide on this, seen as though he had just signed on and only had 2 legs to fly. Sometimes the discretion thing is not always fair on everyone!