We've been to this campground twice. The first time was beautiful and we wanted to come back. We have family that lives on Lake Lanier so we are in the area a lot. Our second site was not as beautiful, but still had some decent views. 

While we weren't drinking, the campsite next to us was and the ranger was pretty aggressive with them, even, seemingly, watching from the bushes. It was very creepy and seemed too much.

As the other comments say, don't expect to drink or just put it in a different container so it doesn't look like alcohol but I can't guarantee the creepy ranger won't sit in the bushes and watch you pour your drink.