Though some people have posted that they can lose weight while having the odd drink of alcohol, it is no doubt affecting their rate of losing
Your body will use the alcohol as a 'preferred fuel' and might be 'storing' the food you eat instead of burning that up

so you will assist your weightloss progress by dropping the booze initially.
When you have moved to the 5th OWL rung/level you can reintroduce alcohol and see how it affects your losing.
We get many people posting that even when they drink alcohol their body remains in ketosis according to the ketosticks - this is because they register the acetones given off in urine as a byproduct of burning alcohol as being the same as ketones, thus giving a false positive result. So if you do drink alcohol don't waste your ketosticks