Single person - How difficult to do everything by yourself?

My aunt solos it all the time with her Honda CRV and little 1970s fiberglass trailer. At home, she parks it in a parking garage under her condo building in a pretty tight space, by herself. She's in her 60s.

And yes, I admit, my husband does most of the set up when we go somewhere. I usually just stand in the back to make sure he's not going to hit anything, but he could also do that alone if he had to. It's gotten a hell of a lot easier for him with a 5th wheel equipped with auto-leveling :)