Mardi Gras festivities in Brazil are dominated by parades, samba dancing, and extravagant costumes. The celebration, particularly in cities like Rio de Janeiro, features large groups of performers and floats that showcase vibrant themes and elaborate designs. Street parties, known as blocos, create a lively atmosphere where locals and tourists join in the celebration. Food and drinks also play a significant role, with traditional dishes and refreshing beverages fueling the festive spirit. Overall, the event embodies the cultural richness of Brazil.