I imagine the expressions of Fred’s party guests to look something like this at seeing Scrooge at the Christmas gathering; and not only that, the once embittered old man looks happy to be there.  Described as looking “irresistibly pleasant” as he walks through the streets, Scrooge is a changed man and the people can hardly believe it. These moments following Scrooge’s ghostly visits make his transformative experience that much more remarkable.