Dodging Drinks on Vacation

April
Hi ladies. I need some advice. My boyfriend and I are going on vacation and staying with his brother and sister-in-law for a week. They are wine lovers and so am I. It's going to be blatantly obvious that I'm not drinking. My boyfriend said I could have a glass a day and sip it really slow but I'm uncomfortable doing that. We decided not to tell anyone yet. What should I do?!