Parking lots are marked with numbers; lots 6 and 8 are very close to the Redrum and Fringe Box Office.
Lot 8 is large and the closest:
Marc Park
500 K Street NW
202 462-2900
$10 for all day
Lot 6
PMI Parking
610 Massachusetts Ave NW
202 785-9191
$11 max; might be $5
after 5 pm
There is also street and metered parking, and of course the Metro, and the Circulator Bus to the Convention Center.
