But despite those elements, this movie isn't for kids. For starters, there are F-bombs, which probably isn't a dealbreaker for some parents. (It wasn't for mine, but it came with a stern warning that if I was caught repeating I'd never see another movie again, and that actually worked.) But that's a surface issue.
The next problem is Bong's decision to cut away from the adventure in favor of lengthy scenes of corporate intrigue. While some may get a kick out of seeing Tilda Swinton in braces and a platinum blonde wig, the satire in these sequences will first fly over youngsters' heads and then bore them to distraction. Keep in mind this is a Netflix release, where the thin veneer of civilization that a theater provides won't be a factor. (Some adults might suffer the same fate. Corporations are malevolent. We know this. Let's advance the story now.)
Then there are the scenes of Superpigs in mortal danger. Without getting too deep into spoiler territory, the final reels take us inside a slaughterhouse, and there's no Temple Grandin to help make this an easy experience. It isn't overly gory, but the scenes are intense. Does this make Okja a good movie for the rest of us? By and large, yes. The movie zips around like a dropped firehose a bit when it comes to tone -- lovable, scary, silly, morbidly depressing, back to silly -- but good art can and maybe should do that.