What information do you have regarding going on a cruise with a baby? I would love to go on the Christmas cruise to Hawaii but my baby will be very young. Does my baby have to be a certain age and what amenities do particular ships have to accommodate a family with a small baby?
If you're crossing an international border by air, then it's a resounding yes . Each and every living human in your party will need their own full and valid passport, it doesn't matter how old they are. Domestic travel rules can vary, with individual airline rules sometimes compounding confusion. If you're in doubt, speak directly to the airline or with your travel advisor on the circumstances surrounding your trip plans.