The biggest thing they have to sort out in addition to the display aircraft itself, is getting rid of the 2 hour break in the flying display. I know some of it was to do with aircraft displaying elsewhere and transiting but it really disrupt the event. Those on the sea front in prime positions were loathed to leave because the they wouldn’t get back, also although it can’t be helped the beautiful light in the early afternoon clouded over into tricky to an amateur photographer like me conditions by the time the “stars of the show” arrived.