Just to confirm how easy it is to get a new AP, when we were at AKL Oct 15-20 my mom left her AP in the room when we went to breakfast at Kona Cafe in the Poly. Our plans were to go right to MK after breakfast and when we got to the gates she realized she left the AP back at AKL. If we went back to get it we would have been gone at least an hour so instead she went to guest services while my fiancé and I went in to get FPs for Splash (since only they could ride anyway, not me because I'm pregnant, we only needed 2). She has a photo id, but it has her maiden name on it, not the last name that's on her AP, so we were a little worried since the names wouldn't match so I was prepared to show mine since I have the same last name as her AP. Well they didn't even ask for any id, just asked her what her home address was and they printed out the new ticket. It's sorta funny because we realized then that when her finger scan doesn't work, they ask her to see a photo id and no CM has ever commented on the fact that the names on the AP and her id don't match.
Also, I was told once at check-in (since they've never asked for our APs either) that if you already have the AP they don't ask you to show it because it's listed in their computer so you shouldn't have any problems at check-in. The CM told us that they usually only ask if you just got the AP that day or if you have a voucher. I'm sure there are excpetions, but that's what they told us.