Fini, from what you wrote about no internal dialogue, and if you weren't on an habituated auto-pilot, and if there wasn't an ambivalent feeling within you (wanting a drink, yet at the same not wanting a drink and trying to fight the drink urge) then the only thing that springs to mind is either, perhaps 'you' actually 'did' want to drink? Or perhaps you never recognised the AV and thought 'you' were it. Then afterwards, you were despairing at the consequences of drinking when you wanted to at the time, or didn't recognise the AV. The AV is only a term for the brain changes that alcohol causes, creating an addiction.
Just throwing this out there for discussion. Maybe you weren't actually addicted and didn't expereince those brain changes? Addiction is a compulsion to do something, which you know you ought not to. So if one part of your brain wants a drink and another part of your brain doesn't want a drink - that's addiction. So there is a choice, do I follow the pro-drink or the anti-drink brain.