I have stayed there many times this past year. My son lives there full time. The staff is great. Very helpful and courteous. I've gotten to know some of the residents and yes, the majority are full time residents. Not a lot of room to open up awnings but for anyone who knows Oklahoma you don't open them up often anyway if you want to keep them.
Some of the sites have hookups on wrong side. No amenities at all. Just a place to plug in for the night.