text: Mennonites mark a simple Christmas, Mennonite children sit bundled in the back of a carriage as they prepare for a winter journey to attend a Sunday service at a meeting house in Wallenstein. Old Order Mennonites are known for their simple lifestyle and, while the routine on Christmas Day differs little from an ordinary Sunday, Mennonites say the holiday represents a joyous time for young and old alike. Story/pictures C9.