Well I guess I really did spoil the movie for myself months ago. Leaked images today of a children’s book line up pretty much exactly with the MSW plot outline. Not sure whether it was better to learn of the spoilers’ truth now or at the movie. Oh well, I still think it won’t ruin my enjoyment, as scene/dialogue specifics seem to still be intact. (although definitely those will be over the internet soon enough.)
Although I still suspect nearly 1/3 of the movie to be different from rumors, since some their “spoilers” changed over time.