Sims who are passionate about Selvadoradian culture immerse themselves in it. They are less likely to make awkward comments and are more likely to nail those tricky dance moves.
At level 2, Sims can do the Selvadoradian salute introduction.
At level 4, Sims are able to do the Rumbasim Dance. They can also start learning about the local myths.
At level 5, Sims unlock the secret menu at the Selvadoradian food stall. They also gain resistance to some natural dangers in the jungle.