15% discount is valid for all new bookings on all small-group Vietnam adventures (trip codes: AVHB, AVHC, AVVL) excluding trip styles Independent, Expedition, Canada Goose, Limited Edition, ACV, and Discovery Adventures. Bookings must be made between December 26 and January 31, 2012 inclusive with travel completed by May 31, 2012. The promotion cannot be combined with any other discount or promotion and does not apply to airfare, optional extras such as My Own Room or applicable in-country fees