Thoughts on moderate alcohol use

I started carnivore 2 months ago to address lifelong SIBO and have had remarkable progress but still not where I need to be yet. I’m going on a trip with friends next week and would like to enjoy a few alcoholic beverages with them without getting wasted. Will a few drinks destroy the progress I’ve made? My specialist told me just one drink can ruin it all and I find that hard to believe. And if I am to drink, what would be the least inflammatory choice I could make? Tequila?