Sorry for the late response, it took me awhile to catch up with the posts! This thread will be the death of me. Also sorry because this is going to be a long post.
How many people do you have in each room and how long are you staying? I am going on my first solo trip

but just for kicks and future planning I decided to price out a trip with 2, 3, and 4 adults in each room to see where the break even point would be. The results were pretty crazy in favor of the military discount. This is for a 5 night/6 day trip with the 4-day Armed Force Disney ticket at ASSports. I also priced out 7 night stays adding in Universal tickets and the results were basically the same.
For the FD promotion, you have to pay the regular price for tickets and rack rate for the rooms and then of course get your food for free. For OOP, I priced out buying cereal and bowls/spoons at home, milk at the hotel store, one QS breakfast, an average QS lunch (no dessert), a snack, and an average QS dinner (no dessert). This is how I eat, I wouldn't be getting a dessert at every meal. Basically I allocated $35/person/night for food.
For a solo trip, I am saving $213 using the military discount.
For 2 people, the military discount saved $333 over a 5 night trip.
For 3 people, the military discount saved $391.
For 4 people, the military discount saved $449.
It's all about the huge savings from that military ticket. If you book a longer trip and need two AFS tickets per person, the savings go down. In that case, I started seeing FD having the advantage once I booked 4 people per room. If you stay at SOG everything gets even more skewed because you can get a huge room for very cheap but you lose out on some of the benefits of staying onsite. If you needed more than 8 days of tickets, you would probably be better off going with FD. And of course your results will vary based on how much people eat, whether you are willing to eat breakfast in the room, and which resort you stay at.
I hope this helps! There are a lot of factors when you start comparing normal discounts to military discounts, but the military discount is
sooo generous that I think it's worth doing the work. Good luck!