Hi Sheri,
Thank you so much for visiting the Disney Parks Moms Panel with your question.
Aulani, A Disney Resort & Spa, is such a beautiful resort. How exciting for you to be thinking about booking a vacation there!
If you visit the link I provided above, there is a bar along the top of the screen where you can enter the dates that you wish to travel to see the typical rate for rooms during your travel dates. These are currently available for May 2015, when you wish to travel. I know that you are interested in special rates. To stay updated on these, I suggest that you keep an eye on the
Special Offers page for Aulani, A Disney Resort & Spa. Currently, there are not specials listed as far away as May 2015. I spoke with a cast member at Aulani, A Disney Resort & Spa, who said that specials are typically released a few months ahead of travel dates, which means that it is still too early for specials for May 2015. Even so, I do suggest that even this far ahead you check the site every so often just to see if any deals have been released. One option that you do have is to book a room at the currently available price, and then if a deal comes out, see if you can apply that deal to your room. There is no guarantee that this can be done; however, the cast member at Aulani, A Disney Resort & Spa told me that they will do their best to help you apply a discount if it is released. I suggest that you call Aulani, A Disney Resort & Spa, at (866) 443-4763 to discuss your specific questions and options further.
I hope that these thoughts are helpful for you, Sheri. Have a wonderful time planning your vacation!