Its actually inherited from portugese and spanish culture, where protestant puntuality is sort of viewd as a "slave" or servant mentality (which in protestant culture where "you" are equal with all before god is just not a thing). A nobleman is the lord of his own time and sets his own appointment, can be found in all spanish colonies and in the morher countries.
> protestant culture where "you" are equal with all Can you explain this concept? If I was in Brazil and invited to a bbq at 8pm, how would the host respond if I asked “so what time do you actually want me to arrive”?
You can go on time if you want to help out preparing the party. If you ask what time the party really starts, they will probably tell you 30 minutes to an hour after the official time, which is how long they expect to spend getting things ready. Some people come 2 hours late because they want to arrive when the party is already “hot”. The early hours tend to be “boring” as everyone is just arriving slowly, helping put food on the table and cooling the drinks, no one is drunk yet and so on. After 2 hours it’s the fun part. Hope that helps should you find yourself being invited by Brazilians , in Brazil or elsewhere.