This is one of those deals that sounds good to be true, but it's not. Basically, you get to stay at the Marriott Ko Olina resort at a discounted all inclusive price (only additional cost was state hotel tax was $8).
The resort has all amenities available for free even after you check out at 10 am, which was critical for us since our flight wasn't until 11 pm. We made full use of the locker room's free lockers, showers (with toiletries), and towels, as well as the pool/beach towels (2 per person with unlimited exchange), lagoon chairs, filtered water, parking, etc. 3 pools + lagoon ensured we were never bored, and we even walked over to other resorts for exercise and felt like this resort compared favorably in terms of being luxurious and toddler-friendly without being a total zoo.
The room itself was very clean and had dish detergent, plates, utensils, even a rice cooker(!), laundry soap, etc. Nice basic lanai.
The only downside was there aren't many restaurant options within walking distance aside from what's at the resort and nearby resorts. But with a fridge, microwave, and other kitchenware, you could easily get snacks to tide you over. There's a store in the resort that has a lot of basics as well.