I know, I wish people could walk in someone else's shoes for just a moment - people just don't 'get' some stuff until they experience it for themselves. While I feel I have been blessed by having relatively healthy children (they have issues, but not life altering ones) I have also been fortunate enough to get to know many children, teenagers, and young adults with an array of disabilities that have made their lives very difficult. And I do feel fortunate to have been able to get to know them, work with them, and help them learn to adapt and cope with the world. I feel like I have learned so much from them, maybe even more than they have learned from me!
Now, if you happened to cross paths with me in line at WDW, and you had a GAC, I'd know it was not for some 'instant line cut' - I'd be looking at you (politely, of course!) but only because I'd be curious about the hidden disability that the GAC was for - OK, maybe curious is not the word - what I'd want to know is what worked for the person with the disability, what assistance was needed, how parents helped the child adapt, etc.
Of course I'm not expecting an explanation, nor would I approach someone on vacation about it! But I try to learn new ways to assist my students wherever I can, and if I heard a sentence that helped a child understand a situation from a parent's perspective, I could use that information to better understand my students back at home, if that makes sense?
What I'm trying to say is that some people you might see 'staring' are like me - learning, but knowing not to invade on someone's vacation. So, please don't get mad at me!
Oh yes, and I have a tendency to be thinking while staring off into space, with a really 'frowny' look on my face - my kids ask me who I'm mad at, and I had no idea I was giving that impression!
Now, the people that make rude comments - that is just completely horrible and should not be allowed. But those are the people you need to stay clear of, not antagonize by giving them a card with info on it. If they already have loose boundaries, then crossing over that line to hand them something might set off their trigger, as they are already on the offensive by making the nasty comment to begin with. The court would see that as instigating, as you have approached the person and gotten into that person's space. Of course you are also risking getting seriously hurt by the angry person.