Thanks for asking this question. My family's vacation runs Saturday - Thursday. Today I found that I could apply the Fall/holiday promo to the Sunday-Thursday portion of our stay at WL. The Saturday had rooms available, at full price. I called and now have two separate reservations at WL. One for Saturday night (no discount) and one for Sun-Thursday (promo applied), same room category. When the telephone CM finished up modifying our existing reservation, I still needed her to take care of my second room (for son & his family), and an hour had passed. I wanted to add the promo again to my son's Sun-Thursday night stay and pay full price for the Saturday. The CM was unable to make that happen for us. She put me on hold several times and was so disappointed to tell me that no promo was available now for my son. It feels like it's turning into a sh*t show - all because I wanted to take advantage of the discounted rooms/4 day park hopper promo. She was able to divide my son's reservation and add the ticket promo at least. She suggested I call back and check in the future.
I put down the $200. on my cc - but the second reservation(s) have not shown up in my Disney experience yet. The CM said it could take 24 hours.