We're 70'. 43' of that is trailer. We rarely have an issue in campgrounds, and have never had to leave a park, always fit it in. That said, I've had a couple of "challenging" spots. It's fun when all the neighbors stand and point, knowing it'll take a while, and you nail it first time. Rule #1, never screw up in front of an audience. 😁
Seriously, while the wheelbases and geometry is different from a dually, it'll do pretty much the same thing, in the same space, with a little practice.