The reviews I've heard involve very poor customer service and issues with the hookups not working.

But regardless, a you can easily get a nice hotel room in NYC for less than the $80 a night plus RV rental fees. You might have to stay in Brooklyn or Queens but that's easier in my book than staying in Jersey since you can stay on the same subway system. Heck, if you're going to stay in Jersey, you can find reasonable hotel rooms not far from the RV park that cost about the same or less per night than the RV park.