CAMBODIAN Tourism Minister Thong Khon will lead a travel sector delegation to a festival in Vietnam next month designed to promote the Mekong region as a tourist destination. The five-day Mekong-Japan Tourism and Cultural Festival, which opens on Tuesday in the southern city of Can Tho, is expected to be attended by more than 1,000 local and international travel organisation representatives as well as the culture and tourism ministries of the Mekong sub-region countries and Japan.