In my experience it is the operating crew that seem to have an attitude with staff passengers. I have been mortified on more than once occasion by my operating colleagues and their treatment of staff passengers I have had onboard. I also have had my mother who was traveling on a trip with me treated like a leper by a colleague of mine while I worked down the back!!!
In my airline there does seem to be a percentage of crew who seem to think that staff passengers in general are a burden yet these people are probably the first to expect the best service when they fly on standby.
I firmly believe that if you cant look after your own then you are not fit to look after anyone else!!!
But dont worry, I am not niave...yes I know there are some difficult staff passengers out there!!!