My DS1 has an early December birthday and we normally postpone putting up the tree until afterwards, so he feels he gets a birthday. So up on December 7th, down on Jan 5th here. We have a real tree which is still going strong.
My kids came down with chickenpox in the last week of term and so missed their nativity plays and some other parties and visits we'd had planned. They've recovered now, thankfully, so we are going to be treating the next 10 days as "proper" Christmas this year more than ever.