My interview is this evening at IAD (ugh... traffic)

1) I don't remember all the countries I've visited -- not a ton but at least 30-35 or so... Am I expected to remember them all off the top of my head?

2) My driver's license no longer has my correct address. I have filed a change of address with DMV, so it's correct "in the computer," and have the paper somewhere (that I think I'm supposed to keep with my DL at all times...oops), but I may not be able to find that. Big deal?

Any other tips from those who have done it at IAD? Do I just park hourly?