Looking at stagecoach's twitter, only Sunderland were reporting heavy passenger demand. And we should bear in mind that on bank holidays all their main core routes are now running at 20 minutes, combining to run at 10 minute intervals on common sections, and also that the ecos are running to full weekday timetables (post 1030).

The majority of reported concerns were due to bank holiday traffic congestion. Same on the GNE Twitter feed, although their passengers did appear a bit more confused as to the services which were running. 

I do think the point of folk having different destinations dependent upon the weather is a valid one though. But equally so is the legal requirement to confirm the services 21 days in advance - it's hard enough to to predict the glorious British summer at 21 hours notice, yet alone 21 days...!