YANBU. I have always adored my own children. Fact.
But I think that might be because they had round chubby faces and fat cheeks as babies. I'm a sucker for fat cheeks and dimples.
Babies with long thin faces, not so much. I'm aware this is very unfair.
But babies with fat cheeks and dimples seem to be more amenable. Maybe because they look so much more friendly and cute that they get more positive input.
However, as they grew up through baby and toddlerhood, my values changed. Thin faces against fat cheeks didn't count any more.
It's now more to do with not screaming your arse off in company, having a few manners, and acting like your parents have taught you something about being in the company of others.
It seems nowadays that kids rule the roost. Nobody teaches them how to behave or have any respect for the comfort of others. Not just older people. Other families who have taken the time to teach their children to behave normally (and most people do!)
Kids running riot in public places is the prevalence now.
So YANBU. If the kids are vindictive and mean I would send them home. There are plenty of well brought up kids around to foster friendship with. You can't do much about the squeaky voices though. It goes with the territory.