I answered on the Christmas thread, we were there the evening of Dec 28 last year. No it was not crowded to get around at all, actually quite a lovely night strolling around. Used our 3 fast passes, late dinner at Biergarten then walked out and had great uncrowded view for Illuminations. I think we did Mission Space orange as a walk on (green had a much longer line since more people can do the easier side), but Soarin wasn't an option for us with how long the line was (around 2 hours I think?).