I am the founder of the 2007 Heinlein Centennial convention, so not a casual fan. And I'm aware of how much reverence fans have for the novel. This adaptation is simply ideal. The love and respect for the original glow from the screen; you'll even recognize everything about Pete the cat. Every change is thoughtful, necessary, and makes the heart of the original shine even further. The creators of this work are clearly Heinlein fans of the first order and they have made a work he would be proud of.