Watch A Christmas Prince: The Royal Wedding for Free: How to Stream the Movie Online at 123Movies. . A year after Amber helped Richard secure the crown. The two are set to tie the knot in a royal Christmas wedding — but their plans are jeopardized when Amber finds herself second-guessing whether or not she's cut out to be queen, and Richard is faced with a political crisis that threatens to tarnish not only the holiday season but the future of the kingdom.