As part of my 365 Days of Change, I've decided that I will not light up my Christmas tree or decorate my house with lights this year.  Of course, I was immediately known as the party pooper and my dear husband decided that my environmental friendly ways have gone too far.  So, we compromised.  Basically, the lights can stay on for 30 minutes max each night.  
On the subject of real vs. artificial Christmas tree, we've had our artificial Christmas tree for over seven years so we feel good that it's been with us.  I don't think we will change it anytime soon.  
Our goal post Christmas is not to splurge on post Christmas decoration sales this year (we went overboard last year, who really needs all those Christmas wreaths?)