I’m not sure how it would work for the CP, but I can tell you what happened for Fantasmic. When our 180+ days opened I was able to get a Hollywood & Vine reservation at 4:50pm (180+3). Fantasmic dinner package wasn’t yet available for Nov. This past weekend the early nov Fantasmic dates opened so I called hoping they could transfer my H&V to a H&V + Fantasmic package. They could not do this, and were seeing NO availability at H&V for dinner. I had to cancel my dinner before it would show up so ended up rebooking at the same time for H&V + Fantasmic. (This involved 3 separate phone calls to Dining, hence 3 wait times, and a bunch of stress so I’m hoping to save you from the same scenario!) So, I do recommend having a reservation because only you will know that you’re canceling at that time and the CM can then refresh and see your time pop up and grab it for you. Had I not made the reservation before the Fantasmic packages were released, I certainly would not have gotten this reservation, if that makes sense. For some reason I was not able to book Fantasmic on my own, using either a desktop computer (Chrome) or phone browser (safari) (I know it doesn’t work with the app either). Not sure how CP is but might make sense to just call, have the CM cancel your restaurant reservation and then immediately rebook it as a CP before anyone can snatch up the time.