Thank you all for your replies. I really appreciate you sharing your thoughts. I just got so excited to find there is a great Forest Service CG that has electric hookups on our route near Yellowstone.
pops....I do understand your concern. Even with great difficulty walking, we could stay in a site without hookups if only my partner did not need oxygen during the day (which could be tanks) and overnight, which requires plugging in an oxygen concentrator. Whether that is a valid reason for an ADA campsite, I do not know. Perhaps you could enlighten me if you know the answer.
loulou57....Some CPAPs can run on DC also. You just have to buy a DC cord and of course have a DC outlet near enough to your bed.