I almost wonder if going back to last year's date would be better for them, though I realize a lot of that is set by the Stampede itself...that place is booked 4-5 years in advance. I had no idea it was so busy there outside of Stampede itself. This late in the year, a lot of studios are starting to look at starting filming early, to get a jump on it. Which means they recall the media guests earlier than expected, which means cancellations.
This has been a particularly rough year for them, though. The 5-pack of TWD people all cancelling really hurt.
Good thing I'm not a huge media guest fan, and go for other reasons.