There are three options for parking:

1) Valet Parking ($26 for the night + tip)

2) Parking Garage (1401 New York Ave NW Parking Garage - one block from venue)

3) Street Parking (could be difficult to find, but cheaper if you find it - PAY ATTENTION to signs)

You can also Uber (recommended) or Metro (McPherson Square - Blue/Orange/Silver line)