@Alynne68,
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.