Remember to add a camera to your packing list! Or if your phone takes good photos, that's an option, too :)

2012/6/27 Shujen Chang <i@blue.cat>
signed up.and what it about?

It's a fun photo Safari to take pictures of places around DC for Wikimedia Commons :)
 

You can definitely make a team right before you start, and of course you can always do the expedition on your own, although I'm sure you'll get to know many new people during Wikimania who will also want to be on a team :)