Summersville Lake itself has a good campground but if you visit in July then it would be very wet, because the
weather in July is the most wettest and it will be heavy rain. So plan according to the weather. Blume Haven is one of the best campgrounds in
Summersville, so try this place or the Mountain Lake Campground which is having so many fun stuffs including hiking, swimming, fishing and whitewater paddling, so i think this would be the best option for your friend and kids.