In Vanuatu, where you will find the most varieties of kava, a kava bar is referred to as a "nakamal" which means a meeting place. You will find people socializing around there, enjoying some kava. Kind of like what a coffee shop is to a Southern Californian. (calling out myself)
In Tongan, women are only allowed to serve kava whereas men can drink it. This is a big part of courtship in this region as the drinkers may be interested in possible marriage with the server(oh la la). Because of this, the servers cannot be serving someone related to them. In the rare occasion that this does happen, that member is required to leave the club for the day for uh...obvious reasons.
Another aspect of this courtship is when a boy asks a girl to make kava. The act of making kava in a gathering is also known as a "Faikava"- this is code for "I'm interested in you." They plan a day and typically, the boy and some friends will come over to her house. There, the boy will help break the roots and the girl will mix and serve the kava. If this boy is interested, he'll linger after the friends leave - they call this an "ahh ahh". If he is extremely interested, he'll stay through the night, until sunrise. This is called an "aa aa aho ‘ia" and it is an extremely big deal. If this happens, soon the town will know and cannot think of one of them without associating the other.
In Hawaii kava is known as "awa". There are 13 varieties of kava grown there but the most popular ones are Mahakea and Mo'i. (say that 5 times fast) Hawaii has many kava bars as it is very popular out there for being a stress-reliever.
In New Guinea, their language alone carries 40 different words for kava out of 823 dialects. Here, kava is better known as "wati". Today, people use kava as a way to exchange. Although kava is not as common here due to it not being grown in this area, kava still lives on for many of the residents here.
In Samoa, kava is supposed to heal and bring truth to the forefront. Here, it is know as "'ava" and is very widely used in ceremonies as a sacred beverage.