Hi, I was asked by a friend to take pictures at a wedding anniversary party (indoors of course) and I am NOT that confident about indoor photography (I have experience with outdoor/outdoor sports photography ). I have a Canon T1i with a 18-55mm lens... that's it. Part of me just wants to put in on Auto because I'm not confident on indoor shots, but I'm sure I can get better shots if I use the AV or M mode I think. Does anyone have suggestions on what settings I should use. The highest f/stop is 4.0 and I just want to take good pictures for my friend to capture this night.