Cabin crew take your seats for take-off
Since the Tenerife accident phraseology was changed so as to avoid any confusion on the FD as to whether a take-off clearance had been issued or not. As far as I can recollect this also included the PA from FD to c/c to take their seats. [Some companies use chimes and no PA]. I have noted that a particular company I fly with regularly makes the PA using the term "take-off" rather than "departure". The fact that I have heard it on all of their flights would indicate that it's SOP. Purely out of curiousity I'm interested in the opinion of professional FD crews regarding this.