Well, I thought giving a website was being very helpful, so I'll over look this rude comment and copy and paste what it says about your question because I'm a nice person!
Here is your answer from the link:
Do I have to actually have an AP/PAP before I can call to get any special AP resort rates?
No you don't. You can call and book the rates without having the AP/PAP in hand.
Here's your answer:
The policy about having it at the time of resort checkin is clear as mud. Some people have been allowed to obtain the rate at checkin with only their AP/PAP voucher. Others have been told to return to the resort front desk to show the desk CM after activating the pass. Still others have not been asked for any AP/PAP at all. The official Disney policy states an activated AP/PAP pass is needed at checkin.You may want to avoid any potential embarrassment at checkin by having an activated pass at that time.