When you go to Vanuatu first you notice its stunning nature. In some point, when breathing that fresh air and admiring that beautiful turquoise sea, you hear this strong *kiss*noice and if you're a woman you might wonder: "Who dares to call me so obscenely?!" But don't get offended, the locals use this call instead of a whistle. They even stop the taxis with it! (I don't know how common this is elsewhere in the world, but it was new to me and I wish I could do it)
People in Port Vila and Vanuatu general are very beautiful and when you get to know them you find them very relaxed, funny and happy people. They'll propably introduce you to the rootdrink 'kava' which tastes and looks like mud and makes your tongue go numb and if you're brave enough to drink few glasses, you should become quite relaxed or should I say fairly merry. You can find it in stores, but if you want to try it with the locals just follow stormlamps.
You should also taste Vanuatu's special treat: coconut crab. It is absolutely divine, but quite expensive too. It is also selled fresh sometimes in the Marketplace, where you find all the basic and exotic veges, fruits and flowers.
You'll propably notice that all the imported products are very often more expensive than in your own country. That's because there can be imported only a little, 'cause there's not much buyers and it's quite far at the ocean. Vanuatu is still quite primitive country.
People in Port Vila like to have fun and part of the fun is very rich nightlife. You can change from bar to bar by taxi, bus(blue or black van) or public transport(back of a truck). Small trips costs usually 100 vatu (less than 1 euro).
You get most of the place when you are open to new things and be a little adventurous.