There’s parking at Arlington Cemetery, but it’s $$$.
There is a parking garage just 75 feet (25 yards for you military types) west of 16th Street on the NORTH side of both Eye and K Streets. A quick walk (1 1/2 block maximum) to the Farragut West station, hop onto the BLUE line to Arlington Station.
The EYE Street parking garage is 3/4 block from the Farragut West station.
I would prefer to let the Arlington Cemetery Parking garage for those bring stuff and for visitors to Arlington. There is a good drop off point on the north side of the Circle and then head to the Cemetery garage.
And KBURI, you'll be one of those that I hope will bring some stuff down for 11:30 AM.