These are the most common forms used by Zen for its passengers.

Once a ticket is issued, all customers are required to complete the passport and credit card form and send it by fax at (202) 207-9550 or scan and email it info@zentravels.com  Credit Card and Passport Entry Form (PDF) 

Passenger Memo for travelers unable to speak English:  This form should be completed and attached with the tickets. Form for travelers unable to speak English (PDF)