Who's been? to the big island? no :( but lived on molokai & maui
What's fun? the beach, some of the most beautiful girls you'll ever see in your life, luaus/eating, snorkling or scuba diving if you're more daring, horseback/mule riding, historic sites, taking breathtaking photos, watching the sunrise and sunset...
Punkrock culture? not sure about the big island, but there probably are some punk rockers in oahu. some in maui, maybe. heres a run down of some of the islands:
the big island- kick back with some fun stuff to do, but really kick back
kaua'i- VERY kick back and low key. go here if all you want is to hike and go to some beaches and possibly meet some locals and get invited to one of their crazy rager parties in the jungle/forest.
oahu- tourist galore. you got your clubs, the "freeway", beaches.. etc. balance of citylife with an island twist i guess. alot of tourist go here.
maui- a nice balance of both. its not toooooo low key like kauai... but its not as city as oahu either. my favorite island.
molokai, lanai- this is somewhere you can go by boat for the day just to check out the phallic rock on molokai and learn about lepors. kinda like kauai but i think a lil bit more even low key. on molokai there is like 1 mcdonalds, 1 movie theatre, 3 stop lights. if you go to molokai you can go up to kalupapa and ride a mule up some pretty mountain trails, check out where lepors used to live and if you wait till midnight, go to kaunakakai and get a loaf of their famous "sweet bread."
Is there graffiti? YES.
Sharks and under water shit to peep? on the big island? not sure sorry.
Non-tourist activities? find a friendly local at the beach and ask him where you can buy some bud. aka pakalolo. then ask him whats really hood and where the party/ragers at.
in those exact words.
Local bush-push? what?
HipHop culture? YES YES.
Local beers? GREEN BOTTLES aka heinikens. thats as local and as hawaii as you are gunna get.
Ruins? ok
Stuff to steal? stealing from hawaii is bad karma dude. you might get beat up