A hotel voucher is issued by Vietnam Online and it has all the information such as your name, the number of rooms, the hotel you have booked, and the date of checking in and otu. A hotel voucher also has all the necessary contacts of both Vietnam Online and the hotel you will be staying at. Please print a copy and bring it with you when you check in the hotel. The hotel voucher is in PDF format and will be sent to your email once your booking is confirmed.