We are heading down in a couple weeks. My dad was originally supposed to go with us, but for health reasons couldn't make it. We saw they are offering a bounceback offer for next year. If I book a bounceback room and add my dad as a guest in my room and my wife does reserves a bounceback room and adds my mom to her room; and then later my parents decide they can't make it, is it easy to cancel my wife's room and then switch out my dad with my wife for my room? Has anyone actually done this before? Thanks!