Christmas started during Avengers this past November, but it has already soft opened with the IASW lighting. Then the Season of the Force decorations went up and there was a media event. Thursday and Friday were much busier than a normal race weekend with no race party would be. But Star Wars weekend is very popular. It sells out in minutes. It's been a race weekend for years, with Tink previously occurring that weekend. And, as others have said, it's a holiday weekend, which always draws crowds. If you are staying at DLH you may want to reconsider due to the expo and proximity to start/finish lines. Also, if staying off site this might be a good time to request a room far from the street. That way you won't be as disturbed by racers leaving their rooms at 4am walking by your room. You can also expect rope drops to be later due to the races clearing the parks Fri-Sun. If you were going to do a non-park day, Sat is probably where the morning is impacted the most with racers leaving early to sleep and Sunday is there the traffic leaving the resort is most impacted with many racers entering the park later due to the later race finish.