carter is charged with a misdemeanor, he wont do jail time and will likely get community service.
the way it works in georgia - or the way it worked when i had highway death cases in georgia - is the state police investigate it and release a pretty comprehensive report. the quality if that report is sometimes questionable, but it is pretty comprehensive
we'll know more in the years to come when carter and the bar they were at get sued for wrongful death, dramshop, etc.