I've never done cancellation, but they sell 'premium' seats as regular seats. WHEN they make that switch varies.
I don't know much about cancellations, but they do not start to give those out when the BO opens...but the line can start as early as it opening.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.