I'm probably in the minority here as an RV Park owner myself. That said, I completely disagree with this. If you want to stay in a parking lot, you're obviously not my target customer. I like to view my product as something more than just a place to hook up for a night, or somewhere that is cheaper than a motel room. I don't want tourists to be forced to stay in my park, I want people who seek out what I'm providing. I'm proud of what we offer to our guests and feel that it can stand on its own vs. a parking lot. Some people don't want what we offer, and that's just fine with me. 

But seriously, if you see a Walmart parking lot as competition, you're probably doing something terribly wrong.