Concerned if people in NE India are friendly and hospitable. You need not worry as
– Most of NorthEast India is sparsely populated and people generally smile at and greet strangers too.
– In most places in India’s northeast, people are helpful and go out of their way to make a traveler feel comfortable in a new region.
– Northeastern people would happily invite you to their homes for tea, meal or stay.
Read more in the book on northeast India – Backpacking North East India: A Curious Journey.