In Noumea, they speak a huge variety of languages, but French might be a base. Noumea is the capital city of the French territory of New Caledonia. It has a Fjords like island run in. The ship stops in a container port and shuttles you around to the city.
Just as they speak many languages the main language is French, and the currency is New Caledonian French Franc. They may accept the Australian dollar, the US dollar or the Euro but expect a poor exchange rate on the street. There is an electric street train ride that will take you around with a guide, but that is one of the most expensive and you can walk to the few features. The Hop on Hop off bus is better as it takes you to the beaches and is, therefore, better value. You can also get to the Aquarium des Lagons, that has local marine life. The Latin Quarter is a little disappointing, so beaches are the best bet.
Walkers, two ideas. If you walk up the hill to the Cathedral, you can walk down the other side then all the way round the coast back. About 10.5 kilometers. The walk to Lemon Bay/Bay Citron head south using a map. It is about forty-five minutes walk south. Seen on the film.