Princess Cruises offers free gratuities on a range of Fall 2018 to Spring 2019 cruises, during its Come Back New Sale. Plus, take up to $300 off airfare when you book through Princess EZair. Save on a wide range of itineraries, including the Caribbean, Panama Canal, Mexico, and Hawaii. Taxes, fees, and port expenses are additional and some exclusions apply. Book this travel deal by May 2.