Your trip is well over at this point but for those reading, here is some information about swelling in feet. https://www.webmd.com/a-to-z-guides/ss/slideshow-swollen-feet
And some information on using compression stockings https://www.webmd.com/dvt/choose-compression-stockings
Best of luck to all.
I'm following up with you and was wondering if the sleeve did indeed help?