Wee did last September. It was good. It was enough dessert for 6 people (there were 4 of us). It wasn't a true baked Alaska. The topping was marshmallow fluff that was hit with a torch.
It was enormous. Take as big as you expect it to be and then add 30 percent. I'll see if I can dig up a picture tomorrow.
I remember reading a review here that called it "Faked Alaska" which I thought was pretty clever. The consensus seemed to be that it was ok but if you were expected real baked Alaska you were going to be disappointed.