Perhaps slightly OT, but as the daughter of a woman who, for 57 years, was able-bodied only to be confined to a wheelchair/mobility chair for the last 3 years, I would gladly wait in line for HOURS with her if she could still walk versus maybe, possibly, appearing to gain some sort of "advantage" over others when boarding a ride at Disney World due to her disability. We are traveling together as an entire family (my parents, my family, my sister and her family), so a group of 12. We've never done this since her accident, so while I'm researching as much as possible beforehand, I know that there will be times we rely on CM's to avail us of what we should be doing for particular rides, even if those instructions may not appear to conform to what some people believe is "right".
I don't like it when I get cut off - in a theme park ride line, on the highway, etc. But then I take a deep breath and realize - even if 20 people just cut in front of me, it probably only extended my wait by what, 2 or 3 minutes? I think its more the perception that some sort of unfairness is being perpetrated - but let me be the first to assure you, even if my mother (or other guests with disabilities) were automatically allowed to the front of any line, all the time, she STILL would only have a fraction of the Disney experience you or I will get to enjoy. I guess I try not to spend my vacations worrying about what everyone else is doing - a sure way to make yourself batty!
I'll get off my soapbox now - hoping everyone (including us!) has magical vacations!