By Ana Gabriela Ribeiro, Contributing Reporter
RIO DE JANEIRO, BRAZIL - Carnival has been the largest source of tourism income for Rio since 1982, and every year the major samba schools prepare themselves to impress the judges and spectators alike at the Sambódromo (Marquês da Sapucaí). The annual event has become so popular the venue is being renovated again to increase capacity to 90,000 and the city is ramping up for the Group Especial (Special Group) performances February . . .