Royal Caribbean Cruise Lines and Celebrity Cruise Lines currently offer alcoholic and non-alcoholic beverage packages on itineraries 4 days or more.
These can be pre booked via your online check in at approximately 90 days prior to departure or alternatively purchased on board on the day of embarkation.
P&O Australia, Carnival Cruise Lines, Holland America Cruise Lines.
P&O UK and Cunard do not offer beverage packages.
International Princess Cruises do offer drinks packages however these vary from ship to ship.