I was thrilled to buy the video about 15 years ago, and still have it. I probably watched that movie 20 times as a kid, growing up in Minneapolis in the '70s. It was liberal times, it was! I am actually amazed that so many folks are in this thread talking about how they remember it, and also amazed that I hardly run into anyone IRL who has heard of it. The “I am a tender sweet young thing” is a catchphrase for me, too, but most people have no idea what I’m talking about.
I saw it in 5th or 6th grade (early 80s), and have never forgotten it (except for “Girl Land” - I don’t remember that being in the movie). I was so thrilled when Mr. Lucky found a copy of the book at a library used-book sale a couple years back. Time to dust it off for the Princess…