1. Thou shalt never call yourself a Washingtonian if you were raised in MD or VA.
This title is given to a select few who were actually born and raised in the city.
2. Thou shalt not use Metro as your main transportation.
There are more delays and track work on Metro rail than visitors to the Smithsonian. This summer, SafeTrack work means that Orange and Silver lines are now affected (so, no quick shopping trips to Tyson’s). It’s best to leave this mode of transport to the clueless tourists roaming the National Mall.