Hi Louis,
I just camped on the beach, no wind at all there, close to toilets and stream water right next to camp. Best of all it's shorter walk from the ferry. Although, there is a second generator which starts up at night which takes some getting used to. Check the tides before you attempt this.
If you want to get close to the Blue Rock Thrushes, which are stunning, there is a friendly one hanging around the beach/community centre area and if you go past the temple you can sit and wait for the male to come by. The others around the lighthouse see you coming so it can be a challenge to get close.