You42 Studios in Roswell will host a two-day Holly Jolly Market Dec. 12–13, with free admission to an indoor marketplace and family entertainment, plus separately priced children’s activities and Santa experiences. The market runs Saturday from 10 a.m. to 4 p.m. and Sunday from noon to 6 p.m. at 11000 Alpharetta Highway. Local vendors, holiday food and drinks will fill the venue’s Main Street marketplace.