Les Robinsons des mers du sud

I enjoyed this Walt Disney film very much. It's pure fantasy but it takes you for a heck of a ride. The acting choices were OK. Best were Dorothy McGuire, James MacArthur and Tommy Kirk. I had read the book years ago and there are some rather big differences. In the book, there was a 4th son ( Jack)--who was 3rd in order of age. In the book, Fritz found a note attached to a bird's foot and that sent him out to search for the sender ( the girl). There were No pirates in the book and lastly, the family had built some structures (like a small tree house)--but eventually chose to live in a cave. I think Disney did just find in re working this material.