Here's the thing: It seems to me that the standard of behavior that is "kids being kids" has gone way, way beyond just "kids being kids" and into "kids being kids who are being allowed to behave like animals."
We just got back from Disney and I was pretty appalled at the behavior I saw at the one sit down restaurant we did go to (Via Napoli) we were kitty corner from a table of 5, that had 3 adults a kid who looked to be about 5 or 6, and a child still young enough to be in a high chair. The "baby" was YELLING "MOMMY MOMMY MOMMY" while smearing pizza all over herself, the table, and anyone in reaching distance, while the older kid was ducking in and out of the chairs, climbing on grandma, etc. Best I could tell, the parents weren't even talking to each other, just sitting there.
This seemed to be a frequent refrain, as though parents feel that Disney seems to absolve their kids for the need for an "indoor voice." There was so much yelling everywhere we went sounded like a sporting event.
I'm childless, but I ate at very expensive restaurants from a very young age. I had a firmly installed "sit down and shut up" and I can't believe that parents take their kids out and are unable or unwilling to firmly and absolutely correct bad behavior.
Running around, climbing on things, shouting, shrieking, etc is not "excitement" or "kids being kids" it is parents encouraging disrespect and inappropriate behavior. I think there should be zero tolerance for any of it. Your child can easily express excitement without shouting, screaming, or any of those things. I saw many kids perfectly capable of doing that and they were a pleasure to be around. Unfortunately the vast majority of other kids drowned them out.
I got the distinct impression though that disney is mostly about the parents. I saw crying kids being dragged around by mom with a camera glued to her eyeball, hauled onto the bus at nearly 10pm halfway asleep, kids being carted around in heat that was exhausting even for adults, terrified kids being held in the parks during a thunderstorm because mom wanted to see the fireworks, etc.
If you have kids, you kind of have to accept that you'll need to skip part of your day for naps, eat somewhere else if they're hungry and give up that prized ADR, maybe miss the fireworks so your kids can go to bed. If you want to do all those things and make your kid tired, cranky, upset, or scared as collateral damage, then you need to go by yourself and get it all out of your system before doing it at the expense of your kid's comfort. After all...it is supposed to be mostly for them, no?