You did t say how many days you are staying, but I personally recommend seeing Oahu and not just Aulani. We spent 7 days on Oahu, 5 of them at Aulani, and really only had two full resort-only days plus two halves. We easily did everything at the resort multiple times and felt like we had lots of time to soak it up. I mean, it was awesome and beautiful, but so are so many other places on the island. We enjoyed snorkeling at Hanauma Bay and Sharks Cove so much that my kid’s wouldn’t even do the Aulani lagoon. Obviously Pearl Harbor is a must, and we enjoyed the swap meet and a little tour of the stadium (but as another poster noted, they start closing up well before the closing time); we also enjoyed Dixie BBQ nearby, but we were in Hawaii 14 days total, so I needed my sweet tea fix LOL. We did Diamond Head even if it’s “touristy.” We didn’t get to Lanikai Beach but just ran out of days! Anyway I just say you should see the natural beauty too—not just the (very beautifully) man-made.