I've noticed more and more of this, I don't know that playing in RV parks is new, or I just haven't noticed it. Many of these "parks" have many, many amenities for the RV crowd, and this is just one more. I haven't really thought much about it, but it might be a cheap way to see the country, hooking-up with a big chain like KOA, and going from one KOA RV campground to another KOA campground all across the country. Here in SE Tennessee, it adds "local flavor" to the "R-V experience," with bluegrass, old-time country, etc. It's a hoot to me when people take pictures of us, thinking they have run into real hillbillies!!!