There were some alterations, and cuts. First, Mace was suppose to have his arm caught in a man-eating flower, but was changed to the creature in the tree that bit his arm. Second, at the end of the movie, Mace sees Izerinah (glowing firefly), says good-bye, and then it snows, and Cindel and the Ewoks dance out in the snow, when in reality it doesn't snow and there as no dancing, just victory music.