There are two parts to a second line. The first line is made up of the grand marshal or parade leader, the band, and whoever is being honored. In a jazz funeral, the family and the hearse are part of the first line. In a wedding, the bride, groom, and wedding party take a position up front. The strutting revelers who fall in behind are referred to as the second line. The leaders of the parade carry decorated umbrellas, while the other participants shake handkerchiefs while they dance. A brass band plays some beats that gets everyone dancing and moving. You can often spot the second-line by bright colored suits and banners.
New Orleans receptions are typically not seated dinners but consist of heavy passed items at the start of the reception, open action stations, and buffets, with emphasis on lots of food options, lots of beverages, and a highly dynamic and social atmosphere that allows guests to move freely about the reception space. Seating is left open for guests to choose their seats and tables. The bride and groom have their first dance near the beginning of their reception, opening the dance floor immediately for the guests' enjoyment!