Grew up.in SW Atlanta. I'm in East Atl at work right now.
Commute every day west to east.
Any particular questions re Atl PM me.
With the internet you can find out what you need to know.
Stone Mountain of course.
You will be able to say you saw the carving before they removed it.
If you are going to go through Chattanooga Ruby Falls is interesting.
Savanah I can't really say much about.
But St. Simon's used to be nice.
And historic.
Probably too developed now.
Stay at the Methodist Center if you go.
Best value and you can eat on premises.
Very safe.
https://www.epworthbythesea.org/
Check out Cumberland Island.
Also the Millionaires Village on Jekyll.
Very strong tides on the Georgia coast.
Not for swimming..
Flat beach goes way out at low tide .
Be prepared for the " no see ums."
Stay in the breeze.
Haven't been there in many years but they had cabins .
It's worth a trip .
You never knew there so many stars.
https://gastateparks.org/StephenCFoster
Edit for The Little White House in Pine Mountain. Warm Springs.
Only if you are in the neighborhood.
And it doesn't sound like you will be.