we have a white house tour at 11:30 on a thursday. since our hotel is far away (rockville) we want to bring a lot with us for the day in the city. since there's no lockers, we wanted to bring our car in to the city just for this one day (other days we'll take the metro).
we need a good suggestions for cheapest parking garage? what time should we get there by to get a space? if we get into dc early, is there anything to do before the white house tour at 11:30 that might be close by?