1. We’re not all Hawaiians.
This is a hard one for most Mainlanders, but if you get this right, you’ll sound a lot more respectful. The term “Hawaiian” is only used to refer to people of Hawaiian descent. They comprise just under 10% of the state’s population. All others who were born on the islands are generally referred to as “locals.” This includes people of Asian ancestry, Caucasians, and people of mixed race.
When in doubt, just say “locals,” as in, “Where are all the secret surf spots the locals don’t want us tourists to find out about?”