Hello & welcome to the DIS boards!
You've definitely come to the right place for your info. We're in much the same situation as you - wanting to plan a
Disney cruise but until my husband returns home & reports to his next duty station, we can't really make any plans. It definitely makes life difficult!
You may want to check with Shades of Green (
contact info) to see whether they know of any additional methods of arranging a short term trip. Since they are running Operation R&R right now, they probably are aware of some ways to pull strings to get last-minute PSs.
Have you considered doing the Veteran of the Day? Last year, my husband participated and it was a very moving experience. To sign up, visit City Hall on Main Street in the Magic Kingdom and they'll let you know what time to arrive (I think we arrived at 4:30 pm?). You then participate in the flag retreat, and are presented with a certificate and a special-edition veteran's collectible pin that is only given to the Veteran of the Day (not available for purchase).
Finally, don't forget that you can get your tickets cheaper at your local base/post MWR or at the Shades of Green ticket office.
Good luck!