My young son didn’t like sitting down at meals at restaurants, but it isn’t acceptable to get up and walk around the table or visit others. So we’d ask for a high chair as long as he fit, instead of a booster. After that, we sat in a booth, kids against the wall.
They were kept busy with toys or books. And if one was too disruptive, one parent walked out with the child while the other finished the meal and paid.
People go out to eat to escape hectic work/family life and relax. Two toddlers running wild are contrary to what they’ve paid for.
I think the nicest thing anyone ever said to me in a restaurant was “Your daughter is so well behaved”