I absolutely agree with all this. For the most part (trying not to make a sweeping generalization here, but...), keeping a youngster up until midnight at WDW is tempting the fates..
Funny you should say this because our family members are (mostly) truly night owls. If ever we would be tempted to misbehave it is not so much during late night hours; it is during the early morning hours, before we've had a chance to fully wake up. One reason I love WDW so much is that the all-day exercise means a
relatively easy sleep. However, if it's late-ish, and any of us are unhappy about ANYthing, the assumption of those around is that we're over-tired. So, um, trying to say this as mildly as possible....yeah, there's exceptions to that rule too.
[Before I say more, let me say, I've put shorthand here....this is in no way a commentary directing others how to parent. Only a few simple ideas that have worked for me.]
One favorite time in our family, we were leaving HS at 11:30pm. We did a fair amount of hopping that visit. The two smallish kids inthe family asked what park we were going to next. I said it was bedtime. They started mildly cheering for, "One more park!" and bouncing up and down a little in their seats (Nothing loud or obnoxious, just happy) Everyone around had a good laugh, as most were obviously exhausted.
As a frequent visitor to WDW. I think I've seen it all, and almost all sides. Yeah, some parents are doing their best. Some are obviously not making good choices. Kids don't come with manuals.
As a teacher, the one thing I've solidly learned is that there is no one size fits all approach to parenting or teaching. (It's actually one of my prime concerns with our country's approach to education and ed reform It's often of the form "every child will..." norm. But this is a whole other thread topic.)
Every child is different. While there are some methods that are poor practices, finding the best approach means going down the master list of 'best' practices until you find the best fit.
One factor is cultural expectations. They vary greatly. One child expects to be yelled at, others have always had quiet parenting. Some kids will misbehave until you handle it the way the child expects, or until they learn that school has different methods than home. Sadly, we're really not ALLOWED to simply hug children - especially beyond 2nd grade. Some kids are easy, some kids, through no fault of the parents, are more challenging.
Then again, I've seen lots of parent sat WDW clearly doing the wrong thing. Clearly some parents actions escalate the behavior.
As an outsider, the best practice is to avoid escataling the situaion with negativity. Often the best remedy is to do as an ealy poster said and use diffusion. Model positive redirecting. In short, I also carry a cache of Mickey stickers. I also love the silly band idea! Often a simple
smile does WONDERS! (or a sympatheitic look)
When it is your family member or child disrupting others, a simple apology does wonders!
Children have an amazing influence on each other. A sticker or silly band or smile or invitation from another child often carries extra value. And will help your own child make positive choices in their conduct. As a teacher, it's truly gold when a child of poor conduct sees to helping another child through their misbehavior. A moment of revelation can do miracles. If you a child, it may be worthhaving them hand out the stickers/silly bands!