Low light highlights

I've just ordered the new Nikon 35mm prime lens and I can't wait to get it. I need a lens for low light and portraits and this one will auto-focus with my D40. The lens in back ordered pretty much everywhere, but should be back in stock any day now. The reviews are mixed; some people are trading in their 50mm for good, others are sticking with it. Since the 50mm only works manually on my camera, I will no doubt keep it. I'll be using it at a friend's wedding reception on the 17th. I'm geeking out!