American Cruise Lines
Pregnant Women: Permitted to board during any phase of pregnancy. There are no restrictions.
Infants: Minimum age is 1 month old.
Carnival Cruise Line
Pregnant Women: Prohibited to sail if she will enter the 24th week of pregnancy before or at any time during the cruise.
Infants: Infants must be at least 6 months of age at the time of embarkation in order to sail on most cruises. Children must be at least 12 months of age at the time of embarkation in order to sail on trans-ocean crossings and remote itineraries, where there are more than 2 consecutive sea days. Children must be 12 months of age on Australia, New Zealand, Indonesia, South Pacific and Trans-Pacific cruises if it includes at least one International port (Pacific Islands, New Zealand, New Guinea, Singapore and Hawaii) or includes more than 2 consecutive days at sea.
Norwegian Cruise Line
Pregnant Women: Norwegian Cruise Line cannot accept guests who will have entered their 24th week of pregnancy by the beginning of, or at any time during the cruise including any and all land arrangements made through Norwegian Cruise Line. An expectant mother's application for passage must be accompanied by a medical certificate establishing her due date and fitness to travel.
Infants: Minimum age is 6 months. For sailings with three or more consecutive days at sea, infants must be 12 months old at the time of sailing.