I wasn't getting this because my natal culture is very kid-friendly and while there are many dressy celebrations and events, often in restaurants, kids are naturally included, provided for and dealt with, usually as a group, and vanish bedward at reasonable times. They ARE well-behaved or ELSE. (We dont know what the "else" is -- they dont push it, and neither did we.) Sure, the Prof and I go out on our own, but well-behaved kids around at restaurants, ceremonies or art events just don't push my buttons.
But then I got to thinking...I really don't like seeing little boys past diaper age, who can be trusted to go it alone reliably in terms of aim and zippers, in the women's restrooms or lockers, and I prefer 18+ locker rooms. Again, this is an area in which my natal culture is kid-friendly and not prudish about nudity, even mixed nudity, in appropriate circumstances, but, at least in the US, the atmosphere changes.
OK, I won't take the kids to Chez Fancy any more, no matter how well-behaved they are. I will take them to Chez Ethnic, where the clan gathers for fancy occasions, instead.
In my mind, Chez Fancy is a local high end French place that always has something fantastic and veg on the menu, and for which we Dress Up and drink good wine, like in a movie. There are rarely children there, come to think of it, and if so, only at the start of the dinner service. I'll make the reservation for eight.