I just went to the completed Grinchmas and most of it was good. They put some major work into it. They have a show that tells the story of the grinch. The only problem with it, is that instead of doing it 3 time a day, they split it up into 3 acts, so in order to see the whole show, you have to come back every hour to watch it.
On the waiting line for the Sneeches monorail, they have you go and meet the grinch. (They have all of the sneeches ride covered up so you cant see anything). This in my opinion, is a waste, espically with the 45 minute waits that they get.
They also have snow. At the bottom of mount crumpit snow plumit, they have a big pile of real snow, but you have to be un der nine to go in it. (a real disappointment to someone like me who hasn't seen real snow since they were 4!) They also have the soap snow (like at disney) all up and down the streets, which is a nice effect.
The characters are also great. Instead of using the normal masked characters with no expression, they actually puddied their faces to give them really big noses or make the grinch look like the grinch in the movie. Also, I've never seen a dog trained as well as the grinch's dog max. With all the hundreds of kids petting it, it just sat there and enjoyed it. (look for someone in a humane society shirt always following the dog around...it's trainer). I never go on the slide, since it was thanksgiving weekend, and it was an hour and a half wait. It's not big at all. It takes about 5 seconds to go down, and you don't go fast.