That's really interesting thanks for replying. I've never imagined someone could just go and hang out with these people unless they had done sort of agreement or transaction, so it's nice to hear that you did.

How do the different groups meet potential partners to marry? Presumably they marry outside of their own group to prevent inbreeding, so how do they go about meeting others?

What was the purpose of your visit, was it research, tourism, journalism? And did the people accept that purpose and welcome you?