The people in the other painting were having a much better time.
Frans Hals was a portrait painter, much like Rembrandt. This one was a group portrait.
This painting depicts the Company of St. George. In the 17th century, such orders were common in Dutch society. Often they were a cross between a police force and a benevolent fraternity.
Another example:
http://en.wikipedia.org/wiki/Image:Frans_Hals_014.jpg
Frans Hals, Archers of St. Hadrian, 1633
