I took mine down early this year because we are leaving for WDW ina few days and I dind;t feel comfortable elaving a live tree up until January 15th.
Usually I start taking the Christmas stuff down little by little after the first of the year. I do it a bit at a time so it's not such a daunting task. Had a couple fo days off last week, so I did it then so I could devote this week to preparing for the trip.