The lesson every parent should have learnt from all these stories is never buy tickets in advance, even if (especially if) the event is being marketed as likely to be sold out and advance ticket purchases being essential, and wait for the first reviews from visitors.
Also, I've never had much time for drones, but I guess one could come handy to do some surveillance on the event in question. Though admittedly a drone would have still been unable to capture the full glory of the 'bustling Christmas market' and nativity scene at the now legendary Lapland New Forest.