How, typically, do passengers and crew behave in a real-life airliner evacuation? Two parts to this:


Do passengers tend to behave in ideal ways?
How do the cabin crew behave?


We know what's supposed to happen: the passengers are supposed to follow instructions, leave possessions behind not inflate their life-jackets inside the aircraft, and so on.

To what extent does this actually happen? 

I know for example that passengers have inflated their life-jackets inside the aircraft (with tragic results, in the case of Ethiopian Airlines 961, where some passengers became trapped inside and drowned as a result). I can bet that some passengers will inevitably want to insist on gathering some tremendously important belongings.

I assume also for example that the management of the emergency exits isn't simply left in the hands of the passengers sitting next to them, but that the crew as far as possible take charge, and that generally they become ferociously assertive and intolerant of any nonsense from recalcitrant passengers.
In the emergency landing of Emirates Boeing 777, EK521, 300 souls including 282 passengers successfully evacuated an aircraft that landed with only the left side of the main undercarriage extended, and was already on fire before it had stopped moving.

The aircraft was severely tilted over to one side, which must have made movement inside very difficult. Within a few minutes an explosion threw large pieces high into the air (possibly a slide or wing part) and the fuselage was gutted by the fire.

So at least in one case where one might expect very frightened passengers packed into a burning airliner to panic dangerously, it appears that they did not, and evacuated safely (one crew member was apparently hospitalised).

It's only one case, not enough to describe what typically happens, but please add to this answer with further examples to make it so.