One "rogue" Cast Member told a Dis'er that she had to have an activated AP to check in with the special AP rate, but even if that were true (the second CM she talked to said otherwise, if I recall correctly, as have other CMs in the past) the Diser was still allowed to book the rates.
There is a normal perhaps 10% discount off rack rate for AP holders. But on occasion there are special rates like the current AP7 rate, which has PPH starting at something like, oh gosh I can't recall but it's good. You call and if you're going soonish, ask for AP7. Otherwise just the AP rate.
With a Deluxe AP, you get 10% discount on most foods. With the Premium (which has no blocked out dates, you could go every single day of your year if you wanted to) you get 15% off most foods, and 10% off most merchandise.
And there are various discounts in downtown disney, too.
Oh, and if you're only getting it for a hotel discount, just one of you needs to get the AP.
Oh yeah, just to be thorough, Howard Johnson Hotel offers a 20% discount for AP holders.
