Hi Pat
The new brochure features four dates for winter/spring 2013 - 23 Jan, 13 Feb and 6 & 20 Mar. These should appear on the website in the next few days.
None of these are available with the add-on but you may be able to add on Cambodia with some of our departures later in the year, as our 2012 dates offered this in September and October. Our next brochure, out in September 2012, should have more information for you.
Kind regards
Olly, your editor