Oh gosh yes, I am disabled and walking on sand is SO exhausting! Especially when it's also hot outside, just a hard combination. I don't know what your beach is like, but there are beaches in my area (New Jersey) that have these excellent chairs to borrow:
https://njmonthly.com/wp-content/uploads/cache/2017/06/js16041b_003/3661572975.jpg
It allows for easy movement over the sand and even a little floating in the ocean. Of course, you need someone to push you.
Maybe there will be an opportunity for you to explore something like this in the future. Don't give up hope, there are still possibilities. 😀 -Melissa, team member