I think it's a big problem that you relied on him and he proved that he wasn't so reliable. Heavy drinking isn't the point; such things can be arranged in advance.
This is also on you, though. Isn't Uber in Atlanta
? Not cheap but at least it was there, and it could have been arranged in advance.
You're a big girl. You need to step up and take responsibility for getting yourself home - and for your drinking as well. And you need to make a decision as to whether this is acceptable behavior to you. I think you're right that he chose his pals over you. Decide what that means in terms of the future of your relationship.