Hello!
I am not an expert on this, but honestly I don't think it would work, or at least not so easily...
I have some experience with alcohol, I also use it as an escape.
There are some people who can drink ridiculously high ammounts in a short period of time, but for the rest of us, there is only so much that you can drink before feeling bad, vomiting, passing out, or most likely all three, and also, if you don't pass out soon enough, it can be a pretty bad experience that can cause suffering. (I for example could never succeed using alcohol as method, because I almost always throw up if I drink more than a certain amount in a given time) And there is the other thing that, alcohol wouldn't kill that fast anyway and if rushed to the hospital, they can clean out the alcohol pretty easily.
Also, I don't know what you mean by 'large bottle', but I don't think that it would be a lethal dose..couple of years ago I worked in a club and I frequently drank 500-700 ml of 40% drinks (mostly Jäger and rum) per night, and I was perfectly fine, it didn't even obstruct me from doing my job perfectly. It is true however, that I drank over time, in like ~8 hours and not all at once, but still, one bottle is most likely by far not a lethal dose for most adults.
Also, I am here if you want to talk about anything :)
I know one fatal case from alcohol, a person drank 0.5 vodka at once..How peaceful the death was I do not know
He most likely had some healthy issues and/or was severely skinny and/or used other substances too. Or was very old...
Otherwise, I find it hard to believe... 0.5 liters of votca at once is a lot, true, but far from being lethal (unless of course, there are other factors too, such as I mentioned above)