When you drop the car off how do you get to the International airport if you don't have a ride

You can take the free train to the international terminal.

There is a shuttle train

There is a shuttle bus

They as re connected by tram

The rental car company is on the other side of the airport. I went to Georgia, ATL airport. Everyone there was exceptionally friendly and helpful.

You can take there shuttle or jump into one of the transportation vehicle

According to Google Maps, it takes about 6 minutes by Uber/Lyft. About 30 minutes to take buses. Closer to 40 minutes to walk. It takes less than a minute to check Google Maps.