It’s frightening how my memory works sometimes. The book was Inside UFO 54-40, and the paradise was called Ultima. I must have read that one thirty times trying to figure out what decisions would lead me there, until a friend said, “You get there by flipping through the pages to the center of the book.”
I did like that there was often not a clear “right” or “wrong” decision in the CYOA books. Sometimes your untimely death was not the result of a single “bad” decision, but rather part of a sequence of events. Sort of like life itself.