Vietnamese OTAs have become well knownForeign OTAs, for example, only accept online payments with international payment cards. Some others accept later payments, but ask customers to enter card information for booking. Some others accept later payments, but ask customers to enter card information for booking. Vietnamese have the ‘use first, pay later’ habit.Vietnamese OTAs have been pursuing their policies to struggle with foreign giants. The OTA often launches free’n’easy service packages (combined service of air ticket & hotel room) with good prices.