My heart goes out to you. Is it possible that God is trying to get you to slow down? I am disabled and have been for many years. My husband and I went on vacation every year. Although I couldn't do the things I did when I was younger, I found other ways to enjoy it that made up for my loss. For example, I found that I loved going to the beach around 7:30 in the evening, when everyone was gone. I would sit and watch the ocean. The peace I feel there is something I never imagined. You can also rent a scooter (leave your pride behind. Nobody knows you there, so who cares)? Whatever happens, find different ways to enjoy your vacation. Opportunities are all around you. It may end up being your best vacation ever!