I love wine. And margaritas. And gin and tonics. Unless I'm having a flare, I drink a few glasses of wine a week (or night). If I'm feeling really dried out or my joints are swollen, I don't b/c alcohol makes those things worse even in healthy people. I take plaquenil, evoxac, and thyroid meds, and my doctor says it's fine.
Now, of course, overdoing it isn't healthy for anyone. And if you take a lot of ibuprofen, you don't want to add alcohol to the mix. I also agree that checking with your doctor is never a bad idea. But if you have a healthy, adult, non-addictive relationship with alcohol, you're probably OK.
We'd likely all feel a teeny bit better if we cut alcohol, coffee, chocolate, and lots of other delicious things out of our diets. Some people have bad reactions to these things and should avoid them completely. For me, though, it's not worth that teeny bit of added health. If a glass of wine tastes wonderful, complements your dinner (or evening), and makes you happy, then I say go for it. Or, rather, cheers!