Shake
I know that Allen Carr tells you to continue doing X until the seminar. and, if you are convinced that Allen Carr is going to work for you, then that's what you need to do.
But remember that, unlike cigarettes, the effects of alcohol will severely affect your judgement. You may therefore have to accept being housebound and chaperoned until the seminar because it may not be safe for you to be alone.
Or you could try something else.
To reiterate what someone else said, tell us WHY AA didn't work for you? What, for you, constituted "trying" AA?
I think for most members including me it is a last resort - it seems like a byword for failure in life when you first go. I went in November 2001. Then I went back in February 2002, because I had been caught under the influence while working in a school. I then stayed and it took me the rest of that year to get sober.
I hasten to add that that was entirely down to me - AA can and does work instantly. But, in my case, I took some real convincing that I was "bad enough" to need AA. I only went back because I didn't have any better ideas; I only returned after each drink because my new "better idea" - trying to drink again - turned out each time to be NOT such a good idea; and I only put down my last drink (to date) in December 2002 because I somehow realised that, for me, it was never going to be any different; that every time I tried to drink it was going to go wrong.
Happy to be sober ever since.
Someone called me an AA zealot the other week. Not a bit of it. I go to AA because it works for me. If you, or anyone else, has something else that works for you, by all means go for it.
But if, like me, you DON'T have a better idea, you need to find something soon and MAKE it work, be it Allen Carr, AA, or whatever, not wait for the fairy dust and magic wand to kick in - because without a working solution that does not solely rely on you remembering to be sensible next time, you are fucked.