There were lots of stands because it was a festival.
They were cooking a Maori traditional dish, Hangi. First they dig a hole and bury some vegetables, meats, potatoes and hot stones. Then they cover and have a fire on the hole and steam the food.
The beach of Okains Bay, which is situated on the North-East side of Banks Peninsula.
I hear that Okains Bay is popular as a holiday and picnic area.