Going to Scotland - Leaving Lethbridge

With about 26 hours to go before I leave, I'm having mini-panics. Do I have all my paperwork? Checked 4 times. Flights? 6 times. Clothes? Just twice. 

The restless sleep and waking to dreams of missed flights is not helping, either. 

I know it will be great, but it is also like the great unknown... Adventure awaits!