We did actually consider going to WDW at the same time to use the SOG discount. My family is going a few weeks earler than hers, Jan. 4-11. However, we have an elderly Mom, on dialysis, and thought one of her two children should be around "just in case".
It is my sister's husband, my BIL, who has the SOG discount. It sure would have been great to stay at the CR but we are not able to travel together, and, I think, a military ID is required upon check in.
Figment