I went about 15 years ago so my knowledge is dated, but, we had no problem riding the Metro/Bus out to see George Washington’s home. Just don’t miss the bus connection or you’ll be sitting as a minority for a few.
We stayed near Dupont Circle and walked or metroed everywhere, took a taxi a few times.
A good current guide book before you go is your friend. I think we used Frommers.
Always take a sit down break around 2:30 or 3, preferably with snacks if you have kids, it will change your life and make it much easier to keep going.
There is a tourist bus that makes a big circle around the Mall and other nearby areas of interests. You can reboard at will. It’s worth the cost.
Get the White House tour, it’s awe inspiring!
Definitely doing the White House. Once we firm up the dates I’ll submit the request to my Senator.
Our plan is to stay in the Tysons Corner area. The hotel looks great and I can use my points for the free stay. If I stay closer to DC the points per night almost double.