I've heard good things about Lapland day trips, but also heard overnight stays not so good. Think some are better than others - not sure where this one is but I have been told the location which has all the elves sorting the post out in Santa's post office is really good. Lol.
Last Christmas I took my son to Thomas Land at Drayton Manor which was pretty good, it snowed every 30 minutes and there were characters singing Christmas Songs etc.