No, it does not have WiFi access for attendees.
The internet connection will be very weak due to the sheer number of people in attendance. Do not plan to rely on your smartphone’s internet connection while you are at the event. The 2022 ATL Comic Convention Mobile App does not need internet in order to send you push notifications about schedule changes.
ATL Comic Convention 2022 is July 15-17, 2022 at The Georgia World Congress Center Hall