Drinking on lexapro?

I just got prescribed lexapro 5mg. My doctor said not to drink too often. I already only drink on occasions. But when I drink, I like to drink a lot. Doesn’t really take much to get me drunk since I’m a lightweight. But I have a camping trip coming up and I wanted to actually drink since the others will. I mean I can survive if I can’t drink much but I wanted to let loose. How much you you all drink on meds?