Ko'Ollina (Marriot) is right next door and they share the same ocean pools like Disney's. We liked it because it's 2 bedroom and our grandson , who lives in Waianae would come over and spend a few nights. Expensive as hell!
Eating in Kapolei (especially at Zippy's) was reasonable. Kapolei has all the stores too.....the ones we're used to....Target, Walmart, etc. They carry many things Hawaiian that the mainland stores don't.
The best place we found for souveniers was the Dole Pineapple Plantation. I ended up getting everything on my list from there.....plus I had delicious pineapple soft serve cone. We've been there over and over again.....love it.
Also, be sure to drive around the island (North Shore) to the shrimp trucks for lunch...Giovanni's....don't order the hot! Don't let the look of it scare you. Guy Fieri was a visitor there. The truck is covered in autographs.
Of all the fancy restaurants, the best food for me was always at Zippy's.....and the fact that it was located next to the Kapolei Police Dept was an extra plus.