This is all total rumor, but spoke to someone at Signature Services (aka when you're staying Club level) yesterday, 10/8 about our inability to find specific dining reservations for the very end of November at DHS. Cast member said she could see that a chunk of times for our particular restaurant had not been released yet and therefore were not full, just not yet available. She then speculated it could be because dining packages for Fantasmic might be released soon. Again, this wasn't "official" just what the cast member speculated.