The crowds during the marathon are not bad at all. There are lots of rooms taken because the runners stay at the park resorts, but the parks themsleves are very easy to navigate- and it's actually kinda cool watching the runners in the early am. Very insipring. My experience is that they are there to run- not ride rides. They pass through the parks in the marathon, and don't come back! I wouldn't hesitate to go during this week. If you want guaranteed non crowds- go the following week until mid February- there's no one there!
Add me to the list! We're not leaving until early Feb, but I'll take any heads-up that I can get! I'm hoping the no-crowd rule applies; we'll arriving the first full week of Feb and leaving a few days before the weekend before President's week (boy, that reads funny!). Things should be fairly quiet then? That's fine by me; I'll take cooler weather and earlier park closings over no crowds!
Also, with all these codes: would I be eligible if we have a Disney Visa to hear something from them? I thought I read from someone that they got a code b/c of their Visa, and before it went public? If so, that would be great!

Lastly, should I go ahead and book my room now? We're planning on staying at POR. I'm not worried about it being sold out or anything, but still... (I'm always thinking about this stuff too much!)