The water was a little choppy the day we kayaked so it took us a little longer; I'd say a little over an hour (but well worth it). We didn't find the hike difficult; I hiked it in Chacos (there is a tiny trail for most of the way). The dry bags are definitely large enough to hold your camera; we stored ours in the bags and it worked great. Have a blast!

I wore quick dry pants in case I got any water on my pants. This was nice for hiking once we got to the island too. I suggest some layers, but as on person already said, they provide thermal tops and jackets. They even have paddle gloves to keep your hands warm.

They do a pick up/drop off at a central and easy to get to location in Auckland (outside pier 1, Auckland Ferry Building). Judging by the other paddlers on my trip, you'd be absolutely fine, however, I suggest contacting them directly via their website with further questions. They're helpful and quick to reply. Hope this helps! Happy paddling!