The line about rescheduling soon could have just been a throwaway for the audience. It’s not concrete like the “unforeseen family matter” line (as vague as it is). The problem that I have with “something else” happening on that date, is what would that be? Most positive reasons are usually planned well in advance, and are not unforeseen, unless it’s not a big deal, but if that’s the case then why cancel? I’m really at a loss for thinking of positive reasons, but maybe I’m just a Negative Nelly.