I just tried get the Hilton reservations line (in the US, where I am based) to book me a second room at 50% off the rate of the first room for my children, a longstanding deal which Hilton don't advertise much, but which is on the UK site, and which works in most of Europe (I have used in Turkey in 08 and in the UK in 09), but they seem a bit clueless today (Saturday) and asked me to call international reservations when it opens on Monday. I'm trying to make the reservation at Hilton in Moscow. The (clueless but nice) agent said she was using the code: scx09ap for the second room at half off, but could not get it to work. Any ideas, anyone?

Many thanks.