Lottie, I hope have a great trip! I'm am so happy for you. I don't travel much anymore because of my rsd, but when I have to take long car rides to drs appts or family get togethers I make sure to bring all my meds and extras of them, and also try to get plenty of rest a good week prior. I also recline the seat and try to nap on the way and bring water and snacks and peppermint gum or candy for nausea. I know this isn't much help, but it woks for me. I think you are so brave for flying. I hope you have a wonderful time. Love and soft hugs, Renee.
PS - I also wear comfy clothes that are stretchy and lightweight. You can always layer, so if you get cold, it's always handy to have a sweater to put on. Enjoy!