One of my friends took admission in NERIST. According to him, your luck will play a big part in bagging the seats. Students who have been far behind you in the waiting list ended up getting admission. Luck plays a major role because some students do not attend the counseling session which leaves some of the seats vacant.
In the case of Arunachal Pradesh, however, the counseling session for the students belonging to that state is held on another day. So if a student does get a seat, it may not be the one they were looking for.