So you are mad at kids for...being kids? Kids are loud, deal with it. If you don't like it, then move somewhere without kids or buy a house so you don't have to live with others.
I used to live in a house. If I'd had a choice, I'd STILL live in that house. It had a large, semi-wild back yard, with a thriving ecosystem of fruit trees, squirrels, birds, and the house itself was where I lived for 34 years.
But life happened, and I had to move to an apartment.
If I seem a little snippy with this post it's because I'm getting a little sick and tired of people who have never raised children saying this kind of crap. You can't keep kids quiet all the time no matter what you do because they are little balls of energy that like to play. Normally, I also wouldn't have said anything about your rant since I get that kids can be annoying and sometimes adults need to vent about that. However, it's the fact that you are considering actually doing something to "fight back" and annoy them too is what prompted me to say something.
Y'know what? I don't really care. I'm way past tired of your "people who don't have kids can't possibly understand _____" attitude.
I used to
be a kid. Did my mother let me run around and shriek at the top of my lungs? Not on your life - and we lived on an acreage where our nearest neighbor was the equivalent of about three city blocks away. I was allowed to run around outside, sure... but not out of the boundaries that had been set.
After my mother moved into an apartment after the divorce, my cousin and I were part of a family visit (Thanksgiving, probably), and we wanted to let off steam. So we ran in the hallways, up and down the stairs, and caught a
lot of hell from my mother. She said that was against the rules, making too much noise wasn't allowed in apartment buildings, and we were to go outside.
As for fighting back... simmer down, 'k?

I don't own an accordion right now, and my fingers no longer have the dexterity to play one even if I did (thanks, fibromyalgia). I am fully aware that making
that kind of noise would probably result in an eviction. It's just a shame that the SOB who tried to force his way into my suite a few months ago is still here (would have been evicted weeks ago if the cop had investigated this properly), and that the people with kids don't give a damn if their precious darlings run around in the halls and scream at the top of their lungs. The last time a herd of kids did that, I finally did tell them not to. They haven't since, or at least not in this wing of the building.
I haven't said anything to the across the hall neighbor yet, but will if this continues too much longer. For some reason the people with kids seem to think loud noise is acceptable, whether it's a "birthday party" that lasts until midnight (the kid was younger than 2 and it was the adults who still had the loud music going), kids running in the halls and yelling, kids shrieking outside my door at an hour when it's not unreasonable that a person might be asleep, and do I hear the parents say
one word to them about quietening down, or telling them not to run in the hallway?
Nope, not one syllable.
So my anger is completely justifiable. I don't allow my cat to run around in the halls (even though she desperately wants to), I had her spayed years ago so she wouldn't caterwaul, and when she gets too loud in demanding things (food, or just wondering where I am; it's the feline equivalent of a toddler wanting to know "where's Mom?"), I shush her. I don't play loud music, nor do I have the TV on too loud. If/when I get another cat, that cat will also be spayed.
And you're lucky I don't live in your building. Because if you pulled that accordion stunt, I'd get with the other parents and conspire to file a bunch of noise complaints against you to get you evicted. You said you live on a family floor, which means you are minority. That means you have to conform to the other residents' lifestyles, not the other way around.
I'm glad you don't live here, too. I feel sorry for your neighbors, since you evidently seem to be like some of the neighbors I've had, and your precious princess can do no wrong.
Running around, screaming, getting in peoples' way by blocking the hallways (had to deal with that situation several neighbors ago when the neighbor kid's friends thought the hallway belonged to them and their oversized skateboards; for some reason the kid's dad seemed unable to deal with it, so I just told the kids to get out of the way when other people needed to use the hallway) is not innocent kid behavior. That's misbehavior, and any parent who doesn't take steps to correct that is not a good parent.
As for "conforming" to their lifestyles - WTH? Why should I? That suggests that I should have a kid of my own, because the "lifestyle" of this floor is to have children. FYI, there are at least two other suites in this wing where single adults live, and they don't have children. Maybe they should go get some, too?
There are rules here that prohibit excessive noise and running in the hallway. I've always tried to deal with people courteously, and reporting them is not normally my first action. But willfully obtuse parents who repeatedly allow their offspring to break the rules are not on my list of favorite people.