The campgrounds within LBL are very nice. There are entire loops that are full hookups, you will need reservations to get one of those. One of my friends loves the Dogwood loop at Piney Campground in LBL, for their large 5th wheel with full hookups. Check out their website for details.
I stayed in my mini-van at an electric site on the water in Piney a while back. Very windy spot but I had good cell service, if that matters to you.
Single empty-nester in Middle TN, sometimes with a friend or grandchild on board