Do people at work know that you've stopped drinking? If so and you feel uncomfortable going / the AV is kicking in, can you not tell them that you don't wish to go? I worked in a job once where people were put under pressure to go to work outings and drink. There was a culture of heavy drinking and in the end I found a job elsewhere to get away from it. I'm not suggesting you get another job but you need to find a way of coping with situations such as this. Many work places these days don't encourage staff to drink. It sounds like your employer needs to change how it approaches these sort of work get togethers.