Tonight, we may have a cruise or dinner cruise. At some point, there will be a luau show. Friday is a tour of the Big Island to see Kilauea and some of the waterfalls. (We were going to DIY with air tickets and a car rental, but it seems that the guided bus tours are actually cheaper.) Saturday, I'm snorkeling in Hanauma Bay for the morning and, if we can swing it, we'll go to the Polynesian Cultural Center for the afternoon and evening.
We won't see the royal palace; I won't see the Arizona Memorial but Moe will. (We were going to go yesterday but didn't start to get moving until 10am, which we were told was pretty much too late. The line forms at 6am for a 7:30 opening, and then they close early on Sundays. So, if we took public transit and got there by 11am, we probably wouldn't be able to get in before closing.) There's a whole host of other neat things we won't have time to do, but I'm hopeful that we'll have a good experience.