Even the NHS, with its very black and white message on drinking in pregnancy (since they changed it!) is ok with moderate drinking during breastfeeding! NHS stuff here.
I also found that, after the first few months, both DD's did their best stretch of sleep at the start of the evening. So after a final feed at, say, 8, I knew it was unlikely they'd want feeding again before 11 and that was the perfect time to relax with a glass of wine if I wanted one.
I told my current midwife that I was drinking a small glass of wine (and clarified that I understood that meant 125ml or less) a couple of times a month. She smiled, said that was fine, and promptly ticked the box on her form that said I wasn't consuming any alcohol. I got the impression she was avoiding the obligation to give me a lecture she didn't think I needed!
The 'why take the risk' attitude when expressed towards other people (perfectly ok when applied to yourself) gives me the absolute rage. Because we are adult human beings. As someone who will have three kids and who has extended breastfed the first two (and plan to the third), I have been under these rules constantly since summer 2008 and will likely continue to be until about 2015 or 2016. Thats 7-8 years. I want to live my life as an adult, making adult choices about the things I enjoy, whether that be drinking a glass of wine, fell walking, dyeing my hair, eating parma ham, etc, etc, etc. I am very happy to modify my behaviour if there is evidence that a behaviour is risky. I'm not prepared to modify it because some people have formed a moral judgement that certain behaviours fall into a category of 'must be proved safe' before I am allowed them, not that I should cease if they are proved harmful.