Age 8yo upwards out for early dinner with adults is good, bringing them out to eat & socialise with adults is part of their development.
As Auntie who likes to eat out & is not only proud of my tribe of DN & DNS, but is paying adult prices for them, I regard roughly 7yo as the threashold to eating dinner out with adults. Around about the growth spurt from little boy/girl when second teeth come through, they can manage them selves better, have stamina to stay up later, appreciate a good scoff, can be good company and enjoy being out with adults. Before that stage forget it.
For the younger kids, I’d go for something where less demanding, kids menus and aim to have them fed & out the door by 6pm because the little blighters get tired. Smaller children cannot manage their stamina as well as older children, it is a capability & skill they acquire as they grow - the clue is the growth spurt, emotional, psychological, physical & dental.
So taking a pair of 15 mo twins down to dinner for 6pm & then staying, for whatever reason & wherever the fault may lie, is asking for trouble. Fraid it’s one of those times when a parent has to suck it up & feed the littlest ones before the 6pm dinner rush in the room, get them PJd & settled before the rest of the party down for dinner. Of course be fair, have a handover for pudding course, no need for complete parental purdah.
Were I dining with the Grumpy Geezer, I’d recognise that you prolly have acquired parental, hearing loss & were not aware perhaps how troublesome & cacophonous some of your party were. It’s not just the level of noise, it’s the pitch. That bitch Mother Nature installed that screechy noise to ensure that her product was not neglected.
Auntie has been known at first signs of boisterous in party of DN &DN eating out to bellow at them “Enough”. They stop & I can feel the rest of the dining room relax. Seriously, people with younger kids do not hear the noise or sense the tension that kids can create - because if you did you would go mad, citing cruel & unusual punishment, violation of Human Rights etc.
Simply, you pissed the fella off & he chose to share that with you.
Equally I have been out with friend & her well behaved DD, people come over as they were leaving to say how delightfully well behaved her daughter was & what a pleasure it was too see her.