In a festive edition for Christmas Eve, Mishal Husain presents pieces by: Ian McMillan on the special pleasures of Christmas Eve; Sarah Oliver on advice for those daunted by the seasonal food extravaganza; Padraig O Tuama on what happened when Bethlehem came to Belfast; Datshiane Navanayagam on the make-or-break power of customer service departments at this time of year; and Jonnie Bayfield on how he fared in devising out-of-the-ordinary gift options.