Wakey,
From what we could see from the outside of the Ice Palaces yesterday, two hours should be enough for a visit. The sculptures are in a valley next to a stream, so I was happy that I was still wearing my jacket, gloves, hat, etc. from snowshoeing. Unfortunately, I made the mistake of changing out of my hiking boots and wish that I would have left them on because the parking lot was a bit muddy and slushy. After peeking through the openings in the wooden barricade, we decided not to go in because we were really hungry. I think that it's worth a visit, especially if you have children. The lights were just coming on as we were leaving and I would have really liked to see it after dark.
According to the site (
http://www.schwarzsee.ch/en/navpage-...FR-176725.html), they should be open tomorrow:
Admission fee
Mid-December until the beginning of March (depending on temperatures)
Wednesdays to Sundays: 2pm - 9pm
Open daily from December 25, 2008 to January 4, 2009
and February 23 to March 1, 2009.