It's difficult. I know I couldn't go and NOT drink. I would want to drink so I would drink.
I would have to stay away. I could manage a meal in a restaurant but no way could I do a winery trip.
Do your friends know your situation? Can you be honest with them. As it's such a small group could they maybe do the wineries without you then meet you later for a meal or vice versa?
If not, I would not go. too risky. All that you've worked so hard for, it's not worth throwing away and starting again. I had 3 years sober then started again and it's taken me 18 months to get back to just 30 days. It's precious. Guard it