2 years ago, there used to be a wonderfully themed area that was the Grinch's lair. You would queue up to meet the grinch and his dog and could have pictures taken with them. It is the
only picture we have ever bought in the numerous times we have been there, it was that cute

The wait in line seemed to go so quickly because you were taking in all the stuff they stuck in the "lair". And the grinch was in full "movie" type makeup - not the green fuzzy suit he wears the rest of year. They must have had a Jim Carrey look-a-like when we were there because he looked EXACTLY like the movie.
But the lair was discontinued as the location for the lair is now the entrance queue to Suess's trolley.
There was also the Whobilation - a skit in Suess Landing that was a quick 1/2 hour retelling of the Grinch story. Again, the costumes were fantastic and the show well done and entertaining. If I remember correctly, it was several times a day. It was also in Suess Landing on a large stage with a huge, crooked Christmas tree.
I am sorry they ended these two things, as our kids really looked forward to them. However, Grinch is still there, but just not in the elaborately decorated "lair".
But Universal has added new shows around the parks, and if done the same as the Grinchmas shows, it should prove just as magical. I believe I read there was a new Christmas Show in the Kid Zone area in US. And the Blues Brothers and Barney have Christmas shows. That coupled with the Macy's parade, you should have enough Christmas specials to keep you busy