I just booked the 4/3 deal and was told to go to the concierge desk after checking in. We have AP's so I bought a 1 day base ticket for each of us. After the tickets are removed from the KTTW card I can then use them to renew our AP's. The only thing I'm not sure if Disney allows or not would be for OP to use the childs tickets along with the adult 1 day ticket to upgrade towards the adult ticket she needs.
No they would not. Besides you can only turn in one ticket for each ticket you need to upgrade. You cannot turn in four tickets and ask for the value of all four to be applied to the ticket he needs. You can buy four one day tickets, then have him go to any guest services and upgrade his one day ticket to whatever he needs, then save your's and the kids tickets for a future trip. As an AP holder, I've had to do this several times. In fact, because I go several times a year using different promotions to get the
DDP, I have several of those one day tickets. All they'll ever let me use to upgrade a ticket (either my AP or my travel partners MYW ticket) is one ticket for each of us. In fact I have one day tickets coming with my May buy four/get three nights free deal, another one day ticket coming for my
free dining Sept ressie, and yet another one day ticket coming with my Dec 40% off PIN code ressie. I know that when it comes time to renew my AP I'll only be allowed to use one of those tickets. If my husband decides to go with me in Sept, we'll have to get him a one day ticket also, then when we get down there turn in his ticket for a nine day parkhopper, paying the difference. He will not be allowed to add any of my one day tickets to his. However, because those one day tickets are worth about $70.00 a piece and the longer you stay the cheaper the tickets, it would not pay to just let him use all of my one day tickets individually, even though we could probably get by with it. To upgrade to the ticket he would need would be around $250.00, but if he used nine individual one day tickets for those days, those tickets would be worth about $630.00. Sorry, I don't think so. Those tickets are worth saving and upgrading individually, even if it takes me several years to do it. They are not going to expire.
Also if he wants an AP you would have to go to a guest services either at DTD or a park to do that. The resort concierge can upgrade those one day tickets to MYW tickets, but only a guest services at DTD or a park can give you an AP.