I haven’t been for a couple of years but I long ago stopped taking the car and travelled by train from Edinburgh.
A guy I work with was there at the week-end and tried to leave just before 5pm. It was after 9 when he finally got out of the traffic. Not a lot of fun with kids in the back
There seemed to be no obvious reason for the holdups. Just a large volume of traffic trying to get out of the parking area onto narrow roads.
His proposed solution for next year is to drive most of the way there and then cycle the last 5-6 miles.
B-E