part of the problem might also be McDonald's nazi-like controlling strategy - in our business class a McDonalds owner came in couple months ago and told a lot about his 2 McDonalds locations in New England. Basically, owners of McDonalds don't own real estate, so that if McDonald's corporation doesn't like the owner they can make the owner out and change owner through an auction. McDonald's can send undercover people to check quality of service at any time, and if they don't like something - number of checks double and warning to owner is given, so that if owner doesn't improve, the headquarters will change the owner.

McDonalds is very very dependent on its reputation, because if there are problems with one location, other locations suffer as well. So, spreading this case more would allow him to get remedy.

I believe that it is possible to sue McDonalds headquarters for such shit. One woman successfully sued McDonalds for a few millions for spilled hot coffee.

Please look for a free consultation from a good lawyer, who might want to work for a percent from the case remedy.