Uber and Lyft service the area, but to be safe make sure to schedule your ride in advance, as service can be spotty. There are also a number of taxi services in Leesburg. Please see the "travel" page for more details.
The ceremony starts at 11:00, please plan to arrive around 10:45.
There is parking at the venue, attendants will be there to direct you to a parking spot. They allow you to leave you car parked overnight if need be.