The "Ala Moana Center" is a massive open-air lifestyle center in Honolulu. From its opening in 1959, the center has evolved to become the eleventh largest mall in the United States. It claims to be the largest open-air shopping center in the world. There are over 350 stores, restaurants and services. The stores in the center range from ubiquitous (e.g. ABC stores and Target) to exclusive (e.g. Cartier and Channel).
The architectural design and features provide a pleasant environment. I do not consider myself a shopper; but as a first-time visitor, I found exploring Ala Moana interesting. I even bought stuff.
My suggestions are as follows:
#1 Parking is free. With over 11,000 parking spots, the parking structure(s) are massive. When you park, take note of where you left your car. The parking structure has number, color, and picture prompts to help you. Better yet, remember the first store you encounter as you transition from the parking structure to the shopping center. Most store clerks can give directions based on that.
#2 Wear comfortable shoes.
By the way, Hawaii Magazine published a five-part series titled "Hawaii Survival Guide: Ala Moana Center". You can Google and find it online. It's an easy read, and still useful if you want to plan before your first excursion.