it is best for anyone not familiar with the specific teams playing to buy seats in the 'blue chair section' ('cadeiras azuis'), which is the neutral area in the stadium - similar to the environment to major soccer matches around the globe, visitors should be aware of potentially encountering confrontations among enthusiats.
when going to important games, or if going independently, it is helpful to arrive at the maracană one hour prior to schedule game time, and only leave about 30 minutes after the end of the game - this eliminates the stress involved with large crowds and hectic supporters, also certain sections do not have assigned seats, so good spots are more likely to be available for the early attendee.
while spectators may not be directly involved in any discussions, there is generally policemen nearby ready to intervene with any conflicts that may arise.
