Where are you coming from?
1) What would you classify as Must See sites? Obviously the White House is
one of them. What are others? Is there a certain order they should be
seen due to proximity to each other?
If you want to visit the White House (inside) you must schedule it through your Congressman. No walk-ins. Hopefully you still have enough time but the lead time is normally weeks to months. I have done both the White House and the Capitol and found the Capitol tour infinitely more interesting. In the White House tour you visit a handful of inconsequential rooms.
2) What are the Must See museums to visit?
Check out the Smithsonianmuseums (there are lots). Depends on what you like, but the Air & Space Museum is probably the most popular. National Galleryis not part of the Smithsonian but also free and worthwhile.
3) Do any of the tourist sites/museums/etc not allow picture taking?
I am not aware of any sites that prohibit photography though some private art galleries/museums probably do. Photography is freely allowed in the Smithsonian museums. You should check with each site before you go. There may be restrictions on photography in government buildings (I think it’s prohibited on the White House tour; I went a couple of years ago).
Also see this article.
4) What is the best way to get around the city? Is there a subway?
Subway yes. To ride the subway you must buy a FareCard, one per passenger. Fares are variable depending on time of day and distance traveled. If you want to park at a Metro lot, most stations require you have a SmartCard, which requires a one-time $5 fee. If you stay in the suburbs be aware that lots will fill up early , though in many there are Reserved Spaces that are free to anyone after 10 AM.
5) How is the airport getting in and out, is it very crowded?
Not any more than any other metro area airport. Reagan National is in Arlington, just over the river, and has a Metro stop. Dulles is in suburban Virginia, maybe 25 miles outside of DC, but has no public transportation. BWI is closer to Baltimore but is served by Southwest Airlines so may be a good choice for some.
6) Are there any restaurants that I should definitely not miss going to?
DC has many good restuarants but is not particularly known for it. One of DC’s best restaurants is 70 miles from the White House.
Lots of expense account places downtown frequented by lobbyists and lawyers. Check out theWashingtonian’s list of 100 Best and the Post Dining Guide to see what we’ve got. I do recommend the Minibar at Cafe Atlantico if you want an intimate, hi-tech cuisine experience at around $150 per person or so. Requires reservations weeks in advance.
7) How is the weather there in mid October? I assume mild?
Mild but changeable and unpredictable this far in advance. In October we are transitioning from the last warm breezes of summer to full-on fall. Be prepared for highs anywhere from 65-85F and it could drop as far as 40F at night.