I've been tasked with some event photography this weekend. Although the event will be held inside, the color of the walls prevents me from using bounce flash, so I have to use direct flash with a single Nikon SB-900 strobe with a D700 body.
I'd like to avoid the "passport photo" look, but I was wondering what I can do maximize the effectiveness of a single strobe. I have a small softbox and I'm considering a flash bracket, but I don't know how much that would help. There will be many people at the event so I can only bring enough equipment that will keep me mobile without banging into people. In what ways can I make the light as pleasing as possible?