The 3 tribes will compete for the ultimate prize... bragging rights. Throughout the week, there will be events that have the opportunity to win your tribe a point (if you come in first) or send you to tribal council (if you come in last). The tribe that wins the most games will be victorious. 

Yes, tribal council has been added this year. That also means individual immunity and hidden immunity idols with it. The tribe that loses the challenge must "Vote Someone Out". The person voted out has 2 options: to leave the tribe and go up for auction by the other 2 tribes, or to randomly draw a mega from the last trip you must do to stay on your tribe.