Seat belts....the perennial problem! Signs on too long....signs not on in time....pax ignoring the suggestion to keep them on whenever seated etc.
Since the cabin crew are working the aisles on a frequent basis, maybe they should remind the fare-payers why it would be in their interests to remain strapped whenever seated. They're quick enough to check when the signs are illuminated! Then when pax are tossed about, the airlines can sue THEM for damaging the aircraft!