Below are some links sent to me by a friend who attended to a recent Russian Napoleonic event - (a not for public battle) that took place in 18 degrees below with knee high snow. Lots of frostbitten reenactors enjoying themselves in sub zero temperatures...hope that is festive enough for you..
http://photogoss.spb.ru/index.php-ru&ft_fotojan.htm http://picasaweb.google.com/piterskaya2010/Janino2010_2#