The Scottish Games at Grandfather Mountain the weekend of July 10-12 are our July outing.
http://www.gmhg.org/
Here is the blog post from our last trip - http://scytrailblazers.blogspot.com/2012/05/july-13-15-grandfather-mountain.html?m=1
This was a lot of fun last time. I can call the same campground to check on availability unless there are other ideas.