You'd be better of drinking larger than coke tbh - the amount of sugar and crap in them. It's ok to have a sneaky pint every now and then but if you are going out to get smashed it's going to undo a lot of work you did at the gym the day before.

Try Michelob Ultra - it's low in carbs and low in calories. It's not all that great tasting - but after a few (dozen) it becomes bearable.