FYI, for everyone that didn't follow the Aulani confusion last year, allow me to explain some of it and hopefully help you avoid possible issues if you wanted to include an Aulani stay. But note, I don't necessarily know all of it.
A number of us talked to the cruise line about whether they'd do an Aulani pre-stay deal. As it was too far away for booking Aulani, they added us to a seemingly pretty informal list and then we let the months pass. For us, we had transferred our reservation to a TA in the meanwhile (and that likely caused some of the issue). When Aulani booking opened up, we tried checking on that Aulani list. The TA tried to track it down with the cruise line but no one had any clue. So, we assumed it was too informal and just lost so we booked our own Aulani stay.
Months passed again and then we went to pay in full. The TA got the approval from us to pay X and we approved as it was what we expected. However, we got charged X + $2K. We didn't notice right away. The TA thought we were charged X. It took forever to track down but
DCL added a 3 night Aulani stay to our cruise without talking to anyone. DCL claimed they told the TA but they had no record of it. We certainly had never agreed to a 3 night stay - since we needed 5.
There was so much arguing/disputing about what was going on between DCL, the TA, and us. I guess it was such an odd situation no one understood what was going on. It was tough to get people to understand there was even a problem at first. On top of all the confusion, after it was cleared up, DCL didn't reverse the charge, but did a refund - which meant that we lost money to exchange fees. Not a small amount of money lost through no fault of ours. For a trip we never took.
If I ever do it again, I'd ask for clarity on how/when we would be contacted. And get a contact name.