I think it's fair to say that, not EVERY single non-rev is identifiable - - - BUT - - - FOR SURE - some definitely ARE!
The way they act / behave -
not necessarily badly, just the way they interact with the crew, <and sometimes each other>, etc. That said - equally as certain is, that there are non-revs who blend in with the crowd 100% who you'd never suspect!
I've also seen non-revs dressed in casual clothes, but wearing their ID's around their necks. Usually these are seen helping out the on-duty FAs with "stuff".
