"You MAY be asked to ASSIST, in the unlikely event of an emergency".
That doesn't necessarily entail having to :-
(i) Check the door is in the "armed" mode, prior to opening it;
(ii) Actually opening the door (sounds easy, doesn't it? It's actually an annual recurrent check requirement of F/A's, to demonstrate they CAN in fact do it;
(iii) Deploying the slide manually, in case it fails to drop (good luck with that one!!);
(iv) Blocking the exit and redirecting pax to the nearest usable exit;
(v) Launching the slide raft, in the case of a ditching;
(vi) Ensuring evacuating pax inflate their life jackets after exiting;
(vii) Checking that pax are NOT wearing - high heels
carrying sharp objects, carrying excessive hand carry, attempting to disembark incorrectly;
(viii) Ensure the pax disembark expeditiously...................
...does it???????????
"You MAY be asked to ASSIST, in the unlikely event of an emergency"....and held legally responsible afterwards, because you agreed???