I was going to be flippant and say just don’t do it, but I really want to travel to Scotland and especially check out Glasgow. It’s cool that you’re going! I’m sure everyone else out there is going to be nervous and stressed out, too. It seems almost inevitable that something unexpected will happen, so instead of worrying about the possibility, you should just accept that you will get there eventually and go with the flow. Bring something to read or do that calms you down. Good luck, and I hope all goes well for you.