The result

I got Haitian hair!

To answer all your questions:
- yes, it feels strangely heavy
- yes, it takes incredibly long (6,5 hours)
- they don't know how long it will last, because this was the first time the lady did this on a 'blan' (= white, which means foreigner in Creole).
- No, it's does not really hurt.
- Yes, it itches