I may have left this too late: want to attend the Hickerson bash in Rockville, MD, on Monday night,17 Oct. (staying at Getaway until breakup Monday morn.). Is there somewhere cheap in Rockville and a way to get there from Ramblewood? Need to get to D.C. Tues. to catch my train home. Notice the Metrorail goes to (and, I guess, from) Rockville.          Tw