I have a friend that has a DVC reservation scheduled in December, originally scheduled for May. In May her daughter was only two and didn't need a ticket when they bought them but now she has turned three and needs a ticket. She called last week to see if she could get her a ticket to make Park Reservations and was told no, which I think is wrong. Now she has Park Reservations for 3 out of 4 of her party hoping she can get her daughter in when ticket sales resume.
I hope you have better luck and/or they change that policy.