Ed Solomon had previously talked about how stories like A Christmas Carol had inspired the third Bill and Ted film, and so it seems that, as Solomon tells Collider, he briefly considered the idea of making Bill and Ted Face the Music a true “Christmas movie” complete with Santa Claus. While, it’s perhaps understandable why this idea held some interest, who doesn’t like a good Christmas movie after all, in the end, it was discarded.
Article source: https://www.cinemablend.com/news/2554898/forget-the-rose-bowl-bill-and-ted-face-the-music-almost-had-a-wilder-alternate-ending