Hands down the best way to explore Oahu. Don’t forget to plan your state park camping permits in advance as you have to print them. malaekahana beach camp is private and an easy launching spot for activities. Keep in mind, gates lock at 7pm so settle in and get your activities done early. I walked to town which wasn’t so bad. State parks are closed on Wednesday and Thursday’s.
Also, the van has solar panels, so don’t park in the shade (I made this mistake for you). A separate power supply was handy! This is the best way to avoid paying $300/night on a hotel room and renting a car.