G-DAMMIT. 20 MONTH OLDS SHOULDN'T EVEN GO TO G-RATED CARTOONS!
Disagree.
You're wrong.
Why shouldn't they?
Really?
Yeah.....we've had our son at around 20 months go along with us when we took his 4 year old sister to the movies. He sat for awhile....enjoyed it....got restless....we took him out....let him walk around the lobby for awhile...went back in....he sat and watched it for awhile...rinse and repeat. I was fine with it. Wife was too. Wasn't anymore disturbing than the 4 to 9 year olds carrying on in the theater.
I don't think it's all that big a deal considering you and your wife tried to minimize the disruption and it was the kind of movie more suitable to younger kids (both big differences between your situation and the one in question),
but I think you are proving the point you're trying to argue against. Your kid didn't even sound that bad and probably handled it better than most his age would have, yet he still couldn't really handle it. Nothing wrong with that, it's just that kids that age aren't built for sitting through a movie in a theater.
Would you have brought your son to the movie alone? Or was he there more out of convenience since you wanted to go to the movie with your daughter?
I know you were responding more to a tangential statement than the original, but another big difference between the situations was that you wisely went with your wife so that one could leave while the other stayed with the older sibling. I wonder if the mother really would have stayed with her loud son if she didn't have a two year old and 9 year old there as well. It sounds like she was the only one with the kids, right? He probably didn't really "earn the right to be there," but was there because she wanted to take the older child and didn't want to make other arrangements for the toddler.