On the Scottish example, I visited recently for the first time in a couple of years, and have to say the car park had far more cars in it than Ive seen on a normal day (ie with no special events on).All the passes for getting on board were sold out by lunchtime. You dont need to pay more to go and see the aircraft, just to get inside it.
Dont see transport as an issue as its a stone’s throw from the A1.
If you want to know more about M.O.F’s plans, why not ask Radar Archive?. He’s on the staff and is a very helpful bloke.