Hanoi, April 2 -- Vietnam's tourism sector is striving to maintain growth momentum as rising fuel prices drive up travel costs, forcing businesses to adapt, restructure products and shift toward more short-haul markets. Cost pressure mounts, many long-haul tours cancelled The spike in fuel prices has created a domino effect across the tourism value chain, from transportation and accommodation to entertainment services. Airfares - accounting for a large share of tour prices - have risen sharply on both domestic and international routes, leading to cancellations of long-haul tours and weakening demand from distant markets. Nguyen Quoc Ky, Chairman of Vietravel Holdings, warned that without timely responses, rising fuel costs could establish...