glögg (spiced hot mulled wine) and some candied almonds to snack on.
This market is open daily until December 23rd. It can get quite crowded in the late afternoons on the weekdays as well as during the weekends. I was there on a Monday early afternoon and there were no crowds! The easiest way to get there from the Hotel Rival is either to walk (15-20 minutes) or take the subway to Gamla Stan (two stops on the red line).