Is it going to be open the 25th of December? And about how much time do you have to make to see it?

Not sure, check the opening time in website.

Don't think so. .check their website

Not sure on the 25th! Approximately 2 hours.

I was just there yesterday, not sure if it will be open on December 25, but you will need to spare approximately 2 hours and 15 min to see and read everything with no rush.