I agree with Stclairm - If a place has no wifi, then fine, who cares.
But if a place advertises free wifi, then it should work.
And, if they charge extra for wifi, then for sure it better work, and my experience is that pay-by-the-day wifi always does work, because you can cancel the charges on your credit card if it does not.
I agree that some parks really exaggerate about how large an RV can fit on a given site. Some are so bad it is just plain silly. I backed into a site where a KOA campground employee pruned the trees from my trailer's roof so I could squeeze in. I later found out there were many bigger sites still available. Just bad management.
Actually I find the narrow roads a bigger impediment to backing into a site than the size of the site itself.
Someone suggested hotels. No way, too many bedbugs these days.