As I understand it, this is something different from the long-standing problem of S&D reservations falling off of MDE from time to time. This is a necessarily new phenomenon that affects the Genie system, in particular the ability to purchase ILL$ at 7:00 -- which is very important, especially on more crowded days, because the best rides sell out long before 9:00. This is a phenomenon where MDE still shows and recognizes your S&D reservation, but yet the system won't let you book at 7:00 because it somehow doesn't think that you are entitled to do so. By the time you get that taken care of, you have missed out on a huge perk of staying at S&D, and you have suffered through very stressful interactions with CMs that wasted a ton of valuable park time.