Hello, everyone. My family bought 180 points at SSR on Saturday while vacationing at WDW. I am planning my next trip already, and we are looking at going for the marathon again next year. I know I can book my home resort at 11 months, but I have a few questions. I am sure these answers are already on this forum somewhere, but I hope you will tolerate me asking again. 
1) Is the marathon always the second weekend of January? I can't find the 2014 dates on-line anywhere yet.
2) Does my 11-month window open on the first day of my anticipated stay?
3) I know I need accommodations for at least 5, but perhaps up to 9 if my sister and her family come. Unfortunately, it's very difficult for my sister and brother-in-law to commit to anything 11 months in advance. If I book the treehouse at SSR at 11 months, can I "downsize" that reservation to a 1br if it turns out I don't need to accommodate as many people?
4) Can I book my home resort at 11 months, then see what else is available at 7 months and change that reservation?
Thanks in advance!

1) Is the marathon always the second weekend of January? I can't find the 2014 dates on-line anywhere yet.
2) Does my 11-month window open on the first day of my anticipated stay?
3) I know I need accommodations for at least 5, but perhaps up to 9 if my sister and her family come. Unfortunately, it's very difficult for my sister and brother-in-law to commit to anything 11 months in advance. If I book the treehouse at SSR at 11 months, can I "downsize" that reservation to a 1br if it turns out I don't need to accommodate as many people?
4) Can I book my home resort at 11 months, then see what else is available at 7 months and change that reservation?
Thanks in advance!
. Marathon weekend is busy, but usually have 1 BR at SSR available 7 months out.