"I'm dating someone from a very different cultural background than me. Is that unusual in Hawaii? Should I be worried about how their family will react?"
Short answer: Hawaii has the most multiracial population of any U.S. state, and cross-cultural relationships are genuinely normal here in a way that's different from mainland America. The longer answer has some nuance worth understanding.
According to U.S. Census data, Hawaii has the highest proportion of multiracial residents of any state — a reflection of generations of inter-ethnic marriage that trace back to the plantation era, when workers from Japan, China, the Philippines, Portugal, Korea, and Puerto Rico arrived and built communities alongside Native Hawaiians. The phrase "local" in Hawaii doesn't refer to any single ethnicity — it refers to a shared Hawaii-rooted identity that cuts across many ethnic backgrounds and often across generations of intermarriage.
Cross-cultural relationships don't carry the same social friction in Hawaii that they might in more ethnically homogeneous communities. It's genuinely common for families to span four or five ethnic backgrounds across one generation. That said, individual families vary — some families have strong preferences about cultural continuity that they communicate to their children, and this is worth knowing about a potential partner's family context rather than assuming universal openness.
The most consistent inter-cultural tension in Hawaii's dating scene isn't about ethnicity — it's about the local/non-local divide discussed elsewhere on this blog. A local person of any ethnicity dating a recent transplant of any ethnicity may face more family skepticism than any purely ethnic difference would generate. The relevant question Hawaii families tend to ask isn't "what are they?" — it's "are they staying?"