Low calorie alcohol for night out?

Hi I’m 21 and I built up a lot of muscle and am feeling much more confident and better however I I still have some body fat and im noticing some veins and abs popping too and with encouragement from lots of places and people know If I cut I’ll look great but Halloween is here and Ireland is a weird country to be a sober young lad is there anything that won’t fuck up my progress and if there is I’ll just stick with N/A or a single pint of Guinness or maybe just water.