As I say, the day after can be hellish re. anxiety.
I didn't drink to that level all the time, I should point out, I'm not, nor was, an alcoholic. I've just noticed a general reduction in anxiety, with the day after a heavy night being the most intense as you refer to.
No suggestions that you were mate !.
Just that from my own personal problems with anxiety I found that the increase in anxiety the folllowing day after drinking is massively increased by the more you drank. I now know the exact level of drink I can have and still function the following day. This can cause real problems as its very difficult to explain to people at events such as weddings etc that the reason you have gone onto soft drinks is that you'll turbo charge your anxiety the following day if you carry on !