We have stayed at SOG once and plan on staying there again next summer. You can find lots of info and prices at the SOG website,
www.shadesofgreen.org. The prices are based upon your rank. Just for example, my DH is a Capt and we pay $110/night. There is no additional tax.
We enjoyed staying there. The rooms are really large. We stayed at the Animal Kingdom Lodge during the same trip and the rooms at SOG were MUCH bigger. SOG is within an easy walking distance to the Polynesian Resort where you can use the monorail. The bus system worked fine for us too.
There is sometimes debate over the lack of Disney themeing at SOG, but it was not an issue for us or the kids. It is a beautiful resort.
We did not eat at any of the restaurants at SOG. We enjoy the Disney restaurants too much.