Passengers often mock the fact that they really don't need to be told how to operate a seatbelt, however investigation has shown that in some emergency situations evacuation has been delayed by people wasting time trying to unfasten the seatbelt. That is the one they are instinctively used to.........in their car, where the buckle is down the side of the seat and not in their lap. Those who listened carefully to the briefing should have the advantage of having this information in the short term memory.
As a matter of interest twas I that was responsible for that change. OK, so I am a big head!