Shawnee offers pretty good deals for night skiing. On holiday Monday's, it is $16. You really can't beat that. If you do go night skiing, be prepared to deal with some fairly fast skiers and snowboarders. The night tends to bring out the teen / young adult crowd. You just need to stay on your toes. I would not recommend night skiing for new skiers or young kids, but it's not problem for @MaineSkiFamily.
Now if we can make it through this Wednesday NIAR event we can get on with winter!