I work at a grocery store and had a couple of deaf courtesy clerks, they never had a chance to tell me whether they preferred one way I did things or others, but they never seemed irritated.
Are most deaf people irritated with hearing people in general, because we deal with daily life in different ways. I will be the first to admit I take hearing for granted sometimes and am now in a position that I'm thinking more in terms of how deaf people would feel. It's not easy.
Someone mentioned not liking it when a person waves their pen around when they are talking to someone else, that's not something you can help, I mean the person doing it prob has no idea they are and it's a way most everyone communicates. I can't think of a single person that I talk to that doesn't move their hands while they are talking. It's just one of those things.
I can see if they were talking to you and you can't hear them, you wonder if they are trying to sign or just waving around uncessarily, but you'll have your answer failry quickly I'd imagine.
Most everything on here is what not to do, and I will do my best to remember, I do however remember what TO do, much easier