For cruises we generally need this data including passport data, but if you are flying to a cruise port, be mindful of these requirements. Effective August 26th, 2010: All Secure Flight Passenger Data (SFPD) will be required in order to complete a booking, in compliance with Transportation Security Administration (TSA) requirements.
Included:
Name as it appears on a government-issued photo ID when traveling
Date of Birth
Gender
Travel agents must provide SFPD information for all passengers traveling November 1, 2010 and beyond, regardless of when the reservation was booked. Any reservation without this information can be refused