Passport Appointment Hours. Monday-Saturday. DS11: Application for U.S. Passport.Most children must appear in person at a passport acceptance facility to apply for a passport. The cost will vary depending on the child's age. Application form DS-11: This form should be filled out but not signed until you submit it at the post office. Get Your US Passport in 3 Days. Passport Application Form: The parent or guardian must fill out Form DS11, the application for a U.S. passport. Application form DS-11: This form should be filled out but not signed until you submit it at the post office. Note: Appointments are strongly recommended. Completed DS-11 passport application – do not sign your passport application until the Passport Acceptance Agent tells you to do so.