We're going to be there, too! It seems like all the locals picked the same weekend to go lol.
I feel like the majority of locals are ready to welcome back tourists who are willing to follow the rules. With state unemployment running out for the first round of people who were laid off in March and no foreseeable end to the current situation, people have warmed to the idea of reopening Hawaii.
If there is one piece of advice I can offer that will ensure you're treated with aloha it's to wear a mask at all times except when you are eating, in the water, or stationary on the beach.
I'm worried about the food situation as well. If you don't have a car, you can used UberEats, Bitesquad, DoorDash, or GrubHub to have food delivered for a (very expensive) fee.
Ko Olina's conditional use permit, as well as state law, requires all beaches to be accessible to the public. The lagoons are manmade, but they are still considered shoreline/beach. The resort recently tried to "manage" access but quickly backtracked when the city issued a fine and locals began organizing a protest. All lagoons will be open to both tourists and locals. Public parking lots will only be operating at 50% capacity, though.
I haven't been able to get a straight answer on whether or not the public can visit Aulani. I'm in a couple of local Disney communities and most people are being told they can shop even if they don't have a room reservation but some dining locations will only be available to hotel guests. When I called, I was told only guests with a room reservation will be allowed on property.