Like they said its fine, and you're running liver protectants anyways. What I usually do is stop the orals for that day and double up on the milk thistle or liv52 in anticipation of having alcohol, because continuing with the dose that day can cause cramping in my experience. Its better to miss just one day of orals then to feel like shit and beat the crap out of your liver unnecessarily. I'd say a few drinks once every week or two is ok on any cycle with moderation being key