My mom interned in DC 25 years ago and when I was planning to spend my summer as an intern here, she trained me. She taught me to stay on one side of the Metro, or walk up with the left side. She said don't hold a map out unless you're in your own apartment.
She explained, "you're in their city, they're not in yours, get over yourself."
I just want to shout out that not all interns are ill-prepared and I thank you for letting us use YOUR city.