This was THE most amazing stop on our trip to the Savannah area for a family with teens (and you know how that can be). The fort has lots of signage to explain everything and the park rangers are all over to answer questions and share their expertise.
I was thoroughly fascinated and thought I had a good feel for the history until I walked around the outside of the fort and saw the damage inflicted to the fort by the Union army. That really blew my mind and brought everything into perspective. It was humbling and awe-inspiring.
On a side note, we were warned to bring bug spray but did not need it as the gnats did not bother us.
If you have time, take a stroll on the trail down to the water's edge. Beautiful sights and an easy walk.
My teens loved it so much, they went back for a second look a few days later. Your admission fee is good for 7 days so you can do this for no additional cost.