We were also there this year 1/1-1/6. It was my third trip that very first week in January. Weather was great, but the crowds were very heavy those first few days. Sunday, 1/2, I planned to do EMH at MGM, but I left about 8:30, because of it was so crowded. Just before I left, I talked to a CM who said that it was the worst year by far. Other years have been great-crowds dropped off right after the first. Yes, the Christmas decorations are usually all still up until about the 3rd, and come down after that. Just beware-when things come down, they come down literally over night. I was amazed that the tall tree in Epcot was there one day and suddenly, all traces of it were gone and the area was replanted the next morning (1/4 I think). The only bad part(I think) is the Christmas music-by the first week in January, I must admit I'm ready for no more Christmas music. But unfortunately, they didn't stop the Christmas music and go back to the regular Disney music until about 1/5.