There was a lot of shifting around of times and gates before the decision to cancel the VS74 Manchester flight was announced. Annoyingly, at least for us Manchester bound passengers, the inward flight from Glasgow (which was already running late) on which we were due to return was switched to cover the Gatwick flight, leaving us in Orlando for another 24 hours.
One service rep said it might be because of slot problems at Manchester. Does that sound realistic? With over 100 flights cancelled at MCO yesterday some disruption was always likely - but was there some advantage in choosing to drop VS74 rather than Gatwick?