Love the idea of the ice rink in the yard. Problem with our yard is the slope. Would need to do some serious leveling to make it worth it. Good luck with it Brian!
As for the Christmas decorations, we usually get them up this weekend. However, the wife is sick and not up to going outside. I put them up at her direction. She always has a great plan on what should go where. My plan would be to put things up on 12/19 and take them down on 12/26 (one week max). Fortunately, she has the vision and makes it look nice for the month.