Depends on if you want to run this kind of operation. First question I'd ask is why did it close? If it has any kind of permit issues, or waste issues, or water issues ... be careful, as those kinds of repairs are expensive.
1.3 million cars passing means nothing if none stop.
I believe anyone that camps, RV's, and knows what Campers and RV'ers want and need, will make it happen. BUT, if you can cover your overhead for about five years after you make the purchase, you'll know then. I'd not expect it to produce much sooner than that, as people need to know about it, plan for it, and believe they will get a good experience at your campground.
Think about how you would convince people to come ... that's a big one. And, once you convince 'em, make sure you tell/told 'em the truth. IF you offer WIFI, have it, if you offer CTV, have it, if you offer a camping rate, don't raise it after you get 'em there with nit-picking 'extras' ... if you have a dog rate, put it on the website.
And, above all, SHOW REAL PHOTOS of your campground, all of it, don't just pick the cute parts, the mowed corner, and the only clean restroom/shower. Show the real facts - if you can't show the campground as it really looks, today, the day they rent the site, then it's not fair to the campers.
Think about ONE thing and one thing only when you walk around your campground: At the rates you offer, would you personally come back, then ask, would I come back!