After following these threads for 5+ years, I finally ordered a cake! We will be at AKL, and the cake is supposed to be delivered to the room on the day of our check-in. (They said someone would need to be there, but I don't think that is accurate, as long as we are checked in.) This is going to be long, but hopefully my ordering experience can help someone.
Ordering took longer than I expected, with the call right at 45 minutes, so make sure to set aside some time to call. We have a dietary restriction (gelatin) and there was a lot of back and forth with the woman at private dining confirming what would work for us. For the record, all of the mousse fillings do contain gelatin. In lieu of the strawberry mousse, I did a custard with fresh strawberries in a vanilla cake with vanilla buttercream. I was happy to hear that the buttercream in the custom cakes does not contain gelatin like the cupcakes in the park, because the cupcakes always look so fun but we can't eat them.
The decor of the cake was another matter. I wanted the "safari sunset" cake that has been shown in this thread several times. However, I did want a standing image of Mickey in his safari gear on the top of the cake. At first, she absolutely refused to include Mickey because she said that he would not match the theme. I insisted that she look through the images that they can use, because I knew that there was at least one safari themed Mickey. She did ultimately find an image of him looking through binoculars and asked the bakery if they would be willing to include that. I told her that he could be in front of or between the giraffes, as if he was looking for them but they were behind him. They agreed to that design.
Here is a breakdown of the costs:
8" Vanilla cake with buttercream $40
Custard and fresh strawberry filling $6
Standing Mickey image $30
Two giraffe heads (not charged)
Then two additional fees, $5 and $20, that I cannot remember. I believe the first was the private dining and the second gratuity? All in all, it is right at $100 for the cake. It was a little more than I wanted to spend, but hopefully it all comes together just like I am envisioning. I will definitely post pictures in about a month.