I just got tickets yesterday using the program. I got them from my local ticket tour office at a military base. Active Duty and retired get a three day park-to-park tiket for free and can purchase reduced two day (get the third day free) tickets. They were $130 at my base tax free. This is a pretty good deal. US also has great room rates but they are for active duty only and I'm reitred. Blue Man Group also has a good special for active and retired military for $29 and something like $49 for their guests.
You can also get the tickets at Shades of Green if it is easier for you. You just can't get them at the park. The free one has to be activated at the park though.