BF, great going on planning. I think that when we plan ahead it causes us to think it through so that we don't mindlessly act in the moment and regret later. If you need to leave in the middle or not go at all, those are options, too! I've avoided many situations where I might be tempted and am slowly starting to put back in my life a minimal number of situations where others are drinking when I have other reasons to be there, with a plan.