Since your trip is literally right around the corner, I can think of a few things that might help.
First of all, don't forget to breath. When I become aware of an increase in my anxiety, or feelings like I might be heading for a panic attack, I check on my breathing. I often find myself breathing to slow and shallow, or I might be hyperventilating. I focus on inhaling through my nose, and exhaling through my mouth at a slow, steady rate of 8-10 breaths per minute. I often find that this technique of breathing helps immediately.
Another thing that you can do is that if you find your mind wandering off to a negative thought, replace with a positive one.
Other quick and simple things that you can do for your travels tomorrow include taking your own bed pillow with you. And if you use dryer sheets/fabric softener, make sure your pillow cases have that fragrance. And speaking of fragrances, many of our homes have their own scents, so you might take a favorite candle with you. Take a book that you are currently reading, or some hobby that you are involved in. My sister is enjoying a knitting project right now. A tea that you enjoy might help.
If you have some "take as needed" medication for your anxiety, such as a medication in the benzodiazepine class, make certain you pack that.
And lastly, do try to stay in the moment, enjoying the destination/journey, as that is a major part of any trip. Focus on the "now" experience, and do not project.
I hope that it's a wonderful trip for you, Rubee! The very best to you!... Chuck