Miss Mermaid, some people DO have a problem with single women RVing alone. This is especially true if she is a "non-standard model" like I am. ;D
I've been RVing since the mid-90s and fulltiming since 1999. My first RV was a Collins fifth wheel, so I joined the local Collins owners' club. On the first rally, the men closest to where I had to park rushed over to ground-guide me. It was open with no trees or other obstacles, so I politely declined their offers. I was a semi driver in the Army and pretty much know what I am doing.
When it came to social hours, I preferred to sit with the men and talk "tech." This seemed to arouse suspicion in some of the wives. They grilled me about my kids (none), husband or boyfriend (none) "crafts" I did (none), and my favorite recipes to cook (none). After that some of them watched me like a hawk and one even dragged her husband away from me when he and I were conversing about something technical. :
This seemed to happen repeatedly. Granted, at the time I was younger and slimmer.
But I really did run into this situation occasionally at several different kinds of RV rallies. Some wives seemed to accept me better when I had a boyfriend for a while. It was pretty bizarre at times. Ladies, I am not after your men! ;D I am just fairly friendly and outgoing most of the time.
On the subject of attitudes at campgrounds and RV parks, I have found that as a single woman RVing in a decent looking 30-ft travel trailer, I have occasionally sensed (and confirmed) negative attitudes from some motorhomers. I just joke about being "trailer trash" and keep on trucking. This does seem to happen more frequently at RV parks (I seldom use them) than at "public" campgrounds.
I am always happy to accept competent, non-condescending help if I ask for it. ;D