I agree, this is not a kids movie. Could be really scary and upsetting for younger children - maybe a marketing mistake there. But as someone in my late 30s who was an only child of the 70s, it totally spoke to me as a smart, subtle, moving and occasionally hilarious exploration of childhood loneliness & angst, and also all the crazy rambunctious creative energy of young imaginations, but really viewed through an adult lens. Genius how Jones creates the 'adult' world of the wild things characters through 'kid' logic, and the gradual revelation of what has happened with his father through the world of the wild things is both chilling and brilliant.