Its not often I come out in support of mad_jock, but he's hit the nail on the head with his point of view....
The cabin crew are trained to be all nice and sweet to the SLF and will happily be at your disposal for the duration of the flight. They are also duly empowered by the captain to strongly encourage (since they don't have the ultimate authority) passengers to abide by certain rules/restrictions whilst on board items on his/her behalf.
If you drag the captain out of his/her seat to deal with some childish tantrum over some petty little problem then you deserve what you get.
If you see flames coming out the engine or the wings falling off and there's not much sign of any action being taken, then by all means stamp and shout at the cabin crew to say the captain may wish to come take a look. But other than that, let the captain do his/her job, let the cabin crew do theirs, and you do yours (sit down,belt up, and ideally shut up
).