Osbourne lights are a walk through the streets(old New York area), it is very crowded right at opening time(when they turn on the lights) it is also very crowded when Fantasmic lets out. But then again I was there Thanksgiving weekend. So you going the first week in December it should not be packed with people. Osbourne lights are very nice, they have street vendors selling snacks and hot chocolate. The lights are breath taking, you can spend a much time or as little time as you like once you get there.