Manhattan, KS has a decent setup for what you're looking for. Not sure if you're interested in traveling that far.... http://www.pdga.com/course-details?id=336
The course is out at the Tuttle Creek Riverpond area. There are numerous campsites within walking distance of the course. The course actually winds through most of the camping sites. RV hookups too. They also have furnished cabins available. There is a swimming area, decent fishing, etc.
The course is nice. Pretty long.
I would avoid it like the plague for the next week or two though... as the Idiot Stampede is currently going on. They setup everything very close to the course, and because of all the fences and crap they bring, most of the course isn't accessible for the duration of the festival. But other than that terrible time of year, it's a very nice place to camp and throw disc.