I booked our room ressie for the first week of May at Pop. I booked the week discounts were released (July 2004) and got the discounted room, but the CM said that there wasn't much available then. When I got my confirmation sheet it said "other guest room" so I called and was told that there were no discounted rooms left, so I was booked under that option. Since the CM is in the room, it will be treated as a regular CM discounted room and was still at the 50% discount. Since then I have been TRYING to get the word out on the boards that if you plan to go the first week of May folks better book the room they can afford and HOPE for a discount. So many folks on these boards book rooms that they can not afford at rack rate, then get disappointed or angry at Disney when there is no discount available on the resort they booked. I believe the first week of May is going to be at capacity, but I'll be there!!
My advice, keep trying. I have gotten room discounts at the last minute when a cancellation occurs. So book something now as a backup and keep trying. If something comes up you can always transfer your deposit.
Since the shortage of availability when calling in July, I have since booked ALL of my ressies for the remainder of the year. I recently tried to add an room to my September reservation and there were no more discounted standard rooms left at CR for mid-September. I have 2 rooms booked, but need one more.