They can and it's in the contract.
“Cruise Fare” or “CruiseTour Fare” includes the amount due for the Cruise or CruiseTour, whether such amounts are
owing and/or have been paid by the Passenger, but does not include amounts due for other products or services such as
air transportation, photographs, gratuities, telephone calls, or medical services which can be purchased separately, nor
does it include government or quasi-governmental taxes and fees, whether assessed on a per passenger, per vessel, per
berth or per ton basis, nor any fuel surcharges, security surcharges or similar assessments made by airlines, trains,
buses, hotels or other third parties which are subject to change and are due and payable by Passenger upon request. For
CruiseTours that include air travel, airfare is included in the CruiseTour Fare.
e. “CruiseTour” means the combined vacation package officially published and offered by