I've just booked Dec 28-Jan 2 to fly into to DC with my husband. His bucket list is to immerse in anything Smithsonian for days :). I'd appreciate advice for anything special we should plan to do at that time, or avoid! Should we rent a car? We want to stay downtown but as I understand the museums generally close around 5:30, what is there to do in the evenings and is there anything outside of DC that we may want to drive to see? Also any good suggestions for us 50/60-somethings to do on New Year's Eve? Last question, we are coming from Toronto, what should we expect for weather - I am assuming that it would be somewhat wintery but in the realm of what I would know as a mild winter.