demob-happy

adjective

feeling elated in anticipation of demobilization from the armed forces
feeling elated and carefree in anticipation of the end of any onerous or unpleasant period
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012