It's the same climate. It's the same relaxed atmosphere. It's the same hotels. People come there for the same reasons. People wear the same kind of clothes.
But the major difference is that all hotels in Hawaii have huge parking garages. It's a ten-minute drive from Honolulu airport to Waikiki, there's excellent public transportation, hotel shuttles, and taxis, but people still just rent cars, because american tourists rent cars out of habit, not necessity. It's so deeply ingrained, it's gonna take a long while to dispel it.