I have finally purchased my first DSLR and the feel of the camera and the way it sounds makes me wonder how it took so long to buy one. Anyway my first big test with the Nikon D40 is our honeymoon in September to New York and Las Vegas. I really want to try some night trails and general photos which show the bright lights of both cities. I only have the standard lens and was wondering if this is ok. Also is a tripod essential as i dont want to take it everywhere with me.

Can anyone offer any advice to a DSLR novice to capture the vibrant feel of both cities.