I've planned for out coming April trip months in advance, had ADRs all made for four of us and at last minute decided to take our 12yr old niece along with us, she's been going thru some tough times and has dreamed about going to Disney for a long time. Our problem is that we can not change our existing ADRs to add her because restaurants are totally booked, couple of those are character meals. Has anyone been in a similar situation? what are the chances of us showing up and maybe be put on a wait list?