Terminal 2 Hourly Lounge... how much per hour and are bookings required?

On Wednesday 19th Dec 2012 my wife and I will be arriving in Beijing at 1745 on China Southern Airline CZ0680 and departing on Thursday 20th December at 0830 on CZ3108 (an overnight stop of approximately14 hours). I have been advised that we will be at Terminal 2.. I hope this is correct. As we wont have a visa for China, I am trying to find out if we need to book to stay in the hourly lounge at the airport and if so, how do we book and how much is it per hour.