This is the advice I received from my travel agent recently.
Please see below terms and conditions copied direct from Norwegian Cruises in regards to gratuities on your Free at Sea inclusions.
For sailings on or after January 1, 2023:
20% gratuities on the retail value of the Beverage Package and/or Soft Drink Package are included when booking through the Australia office.
When booking through the Australia office, gratuities related to beverage and soft drink packages are included.
20% gratuities on the retail value of the Specialty Dining Package are included when booking through the Australia office
