The Fezziwigs, who include the young Scrooge's employer, his wife and their two daughters, are shown as the best kind of people: kind, outgoing, community-oriented, social, generous. They freely share their warmth, their joviality, their food and their home. They all exhibit a jolly Christmas spirit. They like and want to help people. They represent the polar opposite of what Scrooge has become: a selfish, twisted, money-grubbing, people-hating miser.
The Fezziwigs' generosity is expansive: we learn that the milkman, the housemaid, the cook, the baker, all the employees and even the apprentice boy suspected of not getting fed enough are invited to their Christmas party. Their party is filled with dancing, games and merriment, along with Cold Beef and Cold Boiled, mince pies, and beers. Mr. Fezziwig "laughed all over himself" in anticipation of Christmas and Mrs. Fezziwig was "one vast substantial smile," while the daughters were "beaming and lovable."
Dickens believed that if enough people with money and power behaved with the kindness and generosity of the Fezziwigs, the world could be transformed. Dickens shows how just a glimpse of them and the memories the glimpse elicit start to soften Scrooge's hard heart.