Hi @Ruby4, thank you for your post.
We have a page on our website about travel that may be useful to you: Holidays, travel and Parkinson's | Parkinson's UK
In addition some years ago there was another thread about long haul travel which you may find here: Any tips for long-haul travel?
The exchange may be from 2014, but you may still find the messages useful.
We hope you have a wonderful time on your trip!
The Parkinson’s UK Moderation Team 