Any one heading for Belize with overnight in Atlanta might find this useful.
After exiting the International terminal turn right where yo will find the free shuttle to the domestic terminal. most, if not all, hotel shuttles operate from domestic.
On arrival,(it seems a long journey) cross the road to the shuttle bus area, which is zoned.
useful if you know the zone for your hotel. CAUTION. some hotels are franchises and there are two with the same name in different areas.
Next morning you are returned to domestic .cross toward departures, turn left and walk(200 yds) to the end of the building. turn right where you will find taxi's and shared ride buses.
Immediately cross the road. the free international shuttle is in a reserved slip road , only a small sign.
Make an effort to have your boarding card for the Belize flight , it can save two hours waiting at a busy time .
After security establish the terminal for your flight . quicker to enquire at the service desk as the electronic flight board does not display in time order.
Board the train, My Delta/Belize terminal was "E", the first stop.