Anne, I have to disagree on this one. I've used Mears in the past....so not doing that again. However, while I understand that Mears does the driving, I have found DME to be much more 'magical' than the old Mears shuttle. I make no stops at any non-Disney resorts along the way...the 'old' Mears shuttle made many stops. Yes, I may be number 3 stop but it still is only about 40 minutes on the bus, after stopping at the first 2 resorts. I have't had long waits to 'checkin' at the DME counter, or long waits for a bus. I have had both with Mears. I really don't think it's the old Mears dressed up in a warm fuzzy 'Mouse' suit.
So far, I have had good interaction with the CMs behind the counter. But, I haven't had any situations for them to deal with either. Since none of us were there, as bicker said before, it's hard to make a 100% call as to who is right here. Could the CM at DME been more sympathetic to the travelers plight? Probably. But, since people very seldom will tell you if they were snippy/rude/short/hostile in their tone, we'll never know, will we? And I am NOT saying the OP's clients were any of those things. We tend to get caught up in a game of 'he said, she said'. I can only hope that this is an isolated incident. This is not a good way to start your WDW vacation. And if it were me...well, to begin with, I would have had something that showed them I was entitled to DME, especially if I hadn't gotten my packet of tags/info. But, if I had had that experience, no amount of free food, or fast passes would have made up for the stress of worrying about how I was going to get my family to WDW. Rather than focus on 'well, perhaps we should be comped for our distress' we should focus on holding people accountable for their actions. I would have taken down names, times, verbal exchanges (in some form). Then, I would have contacted the appropriate dept to express my concerns.
But, it is nice to be able to post here, on the DIS boards, to let people have a 'heads up' so that they realize that a situation could occur. That whole ounce of prevention vs pound of cure thing.