Sure! It is surrounded by the sea after all. The west side of the island is kept as a nature reservation though, but you are allowed to walk along a nice path through there.
Island used to have an iron mine there and has a lot of cool abandoned buildings from the old days. Also some old bunkers.
>Coffee snobs will you it's worse, but it isn't.
I'll drink any coffee except instant. But I'm paying (on special cause I'm cheap), $5 nzd for 200g of ground coffee.
Having any sort of coffee fresh and cheap would be a luxury.