I did the same.. Had 4 days off plan, for a weekend away to Portugal, ate healthily, BBQ'd chicken and Fish and salads.. but did nick 4 of my sisters chips. But the worst of it, was the coktails, I had them all, it was like this was my last chance for a long while to have a drink. Got on scale's on Monday morning when I returned and gained 7lb, got 6 of that off but the following week. But, as with Badger I'd look at limiting yourself to just a cpl of vodka and diet coke's, surely would be ok. Enjoy your night and get straight back on plan the morning after. xxx