Amazon river cruise Thursdays from Manaus 4 days, 3 nights The riverboat Desafio has 12 cabins (6 upper, 6 lower deck all with private facilities and air-conditioning).  A typical cruise includes the Meeting of the Waters, piranha fishing, night time caiman spotting by torchlight and visit to the local caboclo village.  Return to Manaus on the morning of day 4.