Do I need to provide arrival date, flight number, and hotel booking when applying for a DTV visa in Hanoi?

The requirement for providing arrival date, flight number, and hotel booking when applying for a DTV visa in Hanoi varies. Some applicants, like one in the USA, reported that these details were not required, while another from the UK indicated they were necessary. An additional comment from someone who contacted the consulate in China suggested that while applicants should have an available flight and hotel for their intended entry date, there is no need to make a booking.