Many Ketchum stores will be open until 8 p.m. after the Mayor's Holiday Lighting Celebration on Wednesday, Dec. 7, as part of this year's Buy Local campaign. The holiday lighting celebration will begin at 4:30 p.m. in Town Square with Mayor Nina Jonas throwing the switch on the lights at the square. Santa will arrive at 5 p.m. to hear holiday wishes from the children. They can enjoy free hot chocolate and cookies. Sawtooth Brewery will be serving beer and wine, and Warfield's hot toddies will be available to keep the older crowd warm. The Colla Voce Women's ensemble will sing carols.