I'm planning on doing a massive run on character photos while I'm there this weekend, since MM will still be active. I'm planning on one "normal" shot of me and the character smiling at the camera, then one "crazy" posed shot (or a few, depending on how crazy that character is that day). On the plus side, I won't have extra stuff with me, just my MM card to hand to the photographer as I walk up. I'm assuming that works well for you, because you can be working on attaching the photos as I'm walking back to you? At least that's what I saw the people doing when I was there a few weeks ago. They'd just tuck it in a pocket, take the pics, then pull it out and scan it (I've got my name on it so I make sure I don't get something odd back by mistake).
I'm really easy to spot, I have pink streaks in my hair, so if you see me, let me know.