Regarding problems inherent in evacations, how some pax behave or misbehave, what pax of all ages should know, and should or should not do, and being mentally prepared:
Interestingly, YouTube has barred anyone under their age minimum (18 or 21 or 50 or whatever) from viewing the video linked to on post #8.
Someone decided it did not meet their "community standards" - presumably because one can hear the "F-word".
The nannystaters apparently are more terrified a 16-year old might hear the "F-word" (surely he/she never has before) than that same individual -- one never knows when, for those 168 pax it was last night -- might suddenly encounter an emergency evac situation.
When that moment occurs, one must know what to do, to already comprehend the chaos that often accompanies emergency evacs, what happens when people insist on retrieving carry-on bags, and more.
Or would you rather bury your child, than let him or her hear the "F-word?" (or rather, to admit they probably already have - and surely would during the course of an evacation that goes badly.)
Sorry if a digression, but refusal to confront reality can be frustrating.