Most of Indonesian peoples can speak at least 2 languages. Our local or regional language and national language.
Me myself can use 4 languages: Javanese (native), Indonesian (native), English (intermediate), Japanese (beginner), Arabic (beginner). For the Javanese language there some tiers of politeness but the usage in society can be generalized to polite Javanese (kromo) that we use when speaking to elders and rough Javanese (ngoko) that we use with our peers.
I have read some articles that speak about language effects on mind or point of view. But since I was small I learned more than two languages I cannot really differ them. Something a kin to the expression of "asking a fish what is water".
Based on my own feelings and experiences there are some nuances that accompany each language that I have known. I cannot describe them with words yet, but a language would be appropriate on different settings, medias, and intended audiences.
There are some language usages that are not appropriate when used in a different settings but sometimes of course there are some usages that would also help exploring the meanings