Great write up Holly.
I would suggest that if you are coming from the west on I-70 east you pass by the Washington exit (I-270) exit in Frederick and stay on I-70 to Baltimore. About 20 miles later you want to take Maryland 32 south toward West Freindship. Stay on it until you get to I-95 south toward Washington DC. Go to Md 212 exit. 5 or 6 exits. Follow signs to campground. This way you will bypass all the heavy traffic on I-270 and I-495 the Capital beltway. I-95 maybe heavy but not as bad.
When you are on Md-32 and you get to the first overpass, wave to the right as I live about a mile in from there. I won't be home but have fun waving anyway.