MS and vacations: how to get organized?

Hello everyone, how are you doing?

My sister and I want to go on vacation with our father for at least a week, to allow him to get some fresh air. Do you have any tips you could share with me, websites, or associations that could help us organize everything, please?

I'd like to take advantage while his condition allows it, he's in good shape at the moment and has already recovered from having covid.

Thank you