Take it back to the dealers. We had this on our first A2 and they changed the whole headlight.
They might try and fob you off, telling you it happens on all cars, even the A8 & all BMW,s (my dealer did anyway) but if you've actually got droplets & not just a misting they should change it for you under warranty.
Misting was a very common problem but there hasn't been that much talk about it recently - have they finally got it sorted from late 2003 on?
Don't drink drive! Not only is it socially unaceptable, it also harms A2's.
Was a Merlot Red 1.4SE petrol originally.
Now an Ebony Black 1.4SE petrol with Red Leather, CC, Symphony + all the previous options we had.