There is plenty of street parking available that is free after 6pm on Saturdays. Look for the 2-hour parking signs.
Cocktail attire, but we want you to feel comfortable, so if those shoes are too high or that top button is too tight, let it all hang loose.
The Capitol Hill Hotel is two short blocks from the ceremony and reception venue. May can bring thunderstorms in DC! Just in case, we recommend packing an umbrella.