Hi everyone. I'm new to photography but have had a keen interest for many years. Anyway, I have been asked to take some photos at my fater-in-law's birthday party, it's noting too serious, I'm not being paid and they don't care if they don't come out that great. They would just like a handful at the start to capture everyone there. However I would like to take lots of shots throughout the night to capture the evening, but my problem is I have a Nikon D3100 and just two lenses - my kit lens and a 50mm 1.8G. Ideally I don't want to use the flash as it's just the standard flash on the camera so I would want that turned off so not to have it constantly going off. Would I be right in thinking that the 50mm would be the best lens to use for the party due to it's apature? I can't think of a reason to take my kit lens, so should I just take the 50mm? Also, as I want to not use the flash what settings would you recommend in terms of ISO etc? Thanks for you time.