I know that Washington DC is walkable city. Unless you are bringing your 81 year old mother. She can get around well but not all the walking it would require. I am in need of a good narrated bus tour company that will take us all around the sights and then stop at some so we could get out and look around for a bit. Would love it if Arlington National Cemetery was included. Full day tour would be great so we could see many of the sights. We don't need a private tour.