Society savings are not on Regents web but they are on my web. If you look under 10 SAVINGS the society and onboard booking discounts are listed. Regent may change these of course at anytime but this is the last information I received.

http://www.bkrssc.com/I_2010_Society_Main.htm

This is a special offer ONLY guaranteed until 3/31/09 and I do not know why they are not showing it. Maybe it will be added soon. I know they are really focusing on the excursions and dining reservations on line so perhaps that is where their IT people are spending their time right now.