While this won't affect the three "official" Amtrak trips as part of the Saturday & Sunday Fest activities, please keep in mind that once again Amtrak in its lack of foresight has not loaded the 2016 holidays into its reservation system yet. When enough people point out their mistake yet again, there will be a Sunday schedule on Monday, January 18th, and some Sunday trains on January 17th will operate on a Saturday schedule (in a few cases the Saturday & Sunday schedules differ). We go through this every year. It either prevents one in the know from making a reservation for Monday travel home until the problem is fixed, or if a reservation is made it runs the risk of being changed to a Sunday train number (and potentially different departure/arrival times) than one expected under the weekday schedule. Please take note of this if you plan Amtrak travel that weekend particularly in the Northeast Corridor on a Sunday-only train or any Acela or Regional train on Monday.
I think this usually gets corrected by mid-December.