Hanoi, Aug. 16 -- The Civil Aviation Authority of Vietnam (CAAV) has ordered airlines' strict enforcement or pricing regulations as the country braces for the travel surge during the upcoming 80th anniversary of the August Revolution (August 19) and National Day (September 2). The CAAV director said in a document that all Vietnamese airlines must tightly monitor their sales agents' ticketing activities, track booking trends and ticket sales to adjust operational plans, and add services on high-demand routes, especially those to and from Hanoi. They are ordered to coordinate with local authorities and the tourism sector to launch promotional packages and aviation - tourism combos tied to cultural and political events to stimulate demand. A...