Vodka and diet cranberry juice bad for diabetics?

hey, as im sure you've guessed from the title, im a diabetic, and yes i know drinking is bad but I have been told by many people with diabetes and even endocrinologists that as long as u control yourself and choose smart things to drink u will be fine. I am aware that juice contains a lot of of sugar/ carbs and it's something a person with diabetes should really stay away from but the diet cranberry juice I have says it has only 2 carbs and 2 sugars per serving, so I was wondering if this would be an ok drink to mix with vodka since i hear vodka is also the better choice of alcohol for a diabetic. obviously I wont be drinking a lot I have just herd how cranberry juice was bad but the one I have doesn't sound to bad so i figured id get some opinions.