Note that alcohol is a carbohydrate itself. I have a hard time buying that drinking mountains of wine wont lead to significantly elevated blood sugar
The point is that if it DOES lead to significantly elevated blood sugar levels, it will mean you are diabetic.
I am not sure if you have not understood that point or whether you are worried about your alcoholism being exposed by your GP, potentially forcing you to deal with it head on but IF you are diabetic and continue to run high blood glucose levels you will suffer a potential range of complications including blindness and limb amputation.
You need to make up your own mind as to whether the risk is worth it.