We'll be at WDW while I'm at a business conference with ressies at the Poly concierge 3/14-23, booked at an AP rate. We have an AP for my 7yoDD which we will use. Because of the conflicting info, I have called CRO 3 times in the last month to ask the very same question you all are asking. Fortunately I have received the same answer all 3 times...that yes you can book ressies with a child's AP. The 3rd time I called, however, they did change the name under which the reservation was held from just my name (I kept my maiden name and booked it under that name for company reimbursement purposes) to the names of all 4 family members. The CM at CRO was uncertain what to do when I asked her the question about having to book it under the AP holder's name, so she transferred me to a CM at Guest Services who seemed quite knowledgeable about the process and assured me it would not be a problem. I'll know for certain in 4 short days!