Bill,
I raced in Scotland a few times and it's very...... Interesting. First I'd like to know what class you will be running but I do have a few general things for you.
Talk to the people in tech, when I was there one of my friends had a car underweight, they did not tell him this just disqualified his times up until the last round when he found out by looking at his results and seeing his name at the bottom of the list.
Take some very warm clothing, it will be freaking freezing there.
Try not to be too friendly with the local women, the local guys might beat the crap out of you.
Whatever you do, do not agree to join the Haggis hunt.
Try some of the local beer, in the UK, anywhere North of Manchester the beer is pretty good. South of there I think they put it in the microwave first.
Good luck