You've stumbled into an even-better-than-usual deal for Shades of Green. Starting at the beginning of this month, and continuing until, I think, fall of 2003, Shades of Green has relocated all of its guests to the North Garden Wing at the Contemporary Resort!
This is to make room for SoG's expansion. There is an SoG ticket office in the CR North Garden Wing, so you'll be able to buy the military discount tickets there. The AAFES shop was not relocated, although there are some SoG souvenirs at the ticket office.
The only downside is that 11% state and local tax will be charged on the CR rooms, which would not be charged at SoG.