Smell the coffee
Just to be clear, I think that you and your colleagues are very good overall and running a service on short flights is hard enough without handling cash
My comment was slightly tongue in cheek, since I do tend to take the right money now I have been 'trained' and invariably it is received with a smile and a nice comment.
On the fares side, its a shame that you don't get decent staff travel deals, I didn't realise that.