A few quick suggestions:
Don't swim at night. (That's when sharks feed the most.) Al rubbish, including cigarette butts go back to
the mainland At the end of the camp, sprinkle leaves etc so tha camp looks like the way you came in.
North West may have changed. (The next people would like to feel that' discovered it too). Keep to
campsites at night and operate a buddy system. (Helicopters can't find these islands at night as they
have no radar). Take a VHF radio to Masthead.
Your notes for next year and some feedback for me...
What we forgot
What activities could go...which could go in. any new ones you did.. thought up
What went well
What didn't go so well
Anything else
