This club appears to solve at least some of the issues commenters here have raised:
I learned about them from our electric co-op’s magazine, which ran this article:
… In 1978 when club co-founder Kay Peterson was traveling full-time in an
RV with her husband, Joe, she wrote a regular column for a travel
magazine. In one column, she asked whether anyone would be interested in
a club to help maximize the RV lifestyle. A handful of folks responded,
and, thus inspired, Kay and Joe started the Escapees RV Club. Now,
nearly three decades in, there are over 34,000 member- families around
the country. Not every member can tell you every location (there are
eight Rainbow Parks, 11 co-op parks and two other related parks), but
they all know about Rainbow’s End, which became the club’s headquarters
in 1984. …
Inspiring.