You are legal to OC in GA with your AL permit. A permit is required to OC in GA. As for acceptance, it varies. Just like anywhere else, the cops and general population don’t have the best knowledge of gun laws. I OC fairly frequently and have only had one soccer mom hassle me.
Be aware, as I am sure you are, that GA has many, many places off limits to carry (open or concealed). We actually have more places off limits than any other state.
Here are GA’s gun laws “in plain English”: http://www.georgiapacking.org/law.php
That page also has links to the state code sections, attorney general opinions and case law.
Places off limits: http://www.georgiapacking.org/gflpol.php
Places NOT off limits: http://www.georgiapacking.org/gflnol.php