There is some awful acting in this (the husband in particular comes to mind) but I think overall this is a good adaptation of a great Bradbury story. There are good takeaways from it to ponder as well: 1. The consequences of a world where adults are increasingly obligated to spend more time working (take notice of the fact that both the main character & her husband are working on Saturday) which turns parenting into short segments of the day.
2. Even if world peace were possible, is being less guarded & defensive among our fellow Earthlings a gateway to becoming the victim of enemies whose existence might not be known to us for the pure fact that they've identified us as capable of defending ourselves? For science-fiction fans that might make more sense.
3. As times continually change has the world become a place where it simply is no longer safe for children to be running around unsupervised ANYWHERE? While the villains in this story are the epitome of fictional, are they much different from the real-life & online predators waiting to prey on naive & trusting children? One can't help but notice in this story that had these parents been more watchful of their children's playing that "zero hour" never would've come to be.