Occupy protesters plan to continue their K Street sit-in tonight, descending on the U.S. Chamber of Commerce’s annual holiday party.

Instead of eggnog and good will, business giants will be greeted by taunts and a human red carpet designed to force the well-heeled to tread on the less fortunate.

The party crashers — supported by the Service Employees International Union and U.S. Chamber Watch, a labor-backed group established before the 2010 elections — were making last-minute preparations this afternoon.

They are going for a holiday horror scene that Christy Setzer, a spokeswoman for the liberal chamber watchdog, described as “Charles Dickens meets red carpet” complete with carols sung by the unemployed.

The counter-party will cap off two consecutive days of demonstrations organized by Occupy sympathizers. On Tuesday, activists led by the American Dream Movement, a coalition that includes MoveOn.org, the SEIU and the local jobs group Our DC, stormed Capitol Hill in an effort to turn tent-city energy into legislative action. The next day a similar cast of characters turned their sights downtown, prompting heightened security at major lobby shops and dozens of arrests.