I pity anyone who thinks McDonald's is a family restaurant that you would find good manners and a healthy atmosphere in.
IMHO, go to any other "regular non-family" restaurant.
Except Hooters and such places I'd consider just about any place to be suitable for children, here's a bonus: McDonald's lets your children be noisy at the table etc... that's the only thing that most restaurants won't let you get away with under normal conditions, but you know what? Raise your kids properly and this will be a-ok.
If you think a family restaurant needs to look the other way when parents can't raise their children, fine, but don't suddenly expect that someone having a slightly arousing experience at that place to be an unacceptable sin.
By the way, I'll take a kid witnessing foul language over horrible news about beheaded people and the praise of killing of terrorists any day.
As for latter: propaganda of brutality is never good and if you don't think your children can handle some foul language or some boobies even, then don't breast-feed and don't ever watch the news with them.
If your children can't tell nudity/"good" erotica from sin (however erotica can turn into sin is beyond me btw), then they won't tell the "good killing" (pfft) from the bad ones.
Telling your children there can be good violence and non-good violence leads to what potentially?
Your children might end up in situations where they think first-strikes are good when THEY do it.
Some of the more uptight people need a damn good reality check really.
Disclaimer: I know I brought a lot of points into my text myself, I just felt like it. Deal with it.
If these additional points don't apply to that lady, fine. I was just extending the topic, because I know there's a crapload of people who are just like what I depicted above.