I had noticed a new allergy warning sign at the drive through of our local McD's saying they use real dairy and it may come into contact with your food.  There were a lot of words on the sign, so I didn't read it all (since dairy doesn't apply to me/DD).  I hope they made it clear this is NEW dairy rather than the expected.  When I saw the sign, I was thinking "Well, duh, you have cheese and milkshakes/ice cream."  I hope no one with dairy allergy is like me and just assumes the sign is new, but the ingredients are the same.