Looks like you will have to pay for parking:
Self parking and valet services are available at Aulani. Below, find details about parking rates and policies:
Parking for Overnight Guests
There's so much to do at and around Aulani that you may not need a car! For overnight Guests who wish to park, self parking is $37* per day‘or for the same price, enjoy convenient valet parking service. Rates are subject to change.
Parking for Disney Vacation Club Members
Disney Vacation Club Members staying on a points reservation can enjoy convenient self-parking at no daily charge for up to 2 vehicles.
Parking Validation for Day Guests
The following parking fees apply for day Guests visiting Aulani:
Valet parking for day Guests is $37* per day
Self-parking for day Guests is $12 per hour—or a maximum of $37* per day
Enjoy complimentary self-parking or valet parking at Aulani for up to 4 hours when you spend $35* or more at the following venues:
‘AMA‘AMA – Contemporary Island Cooking
Makahiki – The Bounty of the Islands
The ‘Ōlelo Room, valid for purchases made between 5:00 PM and 11:00 PM
Off the Hook, valid for purchases made between 5:00 PM and 9:00 PM
Laniwai - A Disney Spa, when you spend $35 or more
Merchandise locations, Kalepa's or Hale Manu, when you spend $50 or more
To have your parking validated, please bring your parking ticket and purchase receipt to 'AMA'AMA, Makahiki or Laniwai – A Disney Spa.