Guests on many cruises are generally expected to leave tips for certain cruise staff members serving them. Gratuities is another term for 'tips'. Guests can choose to pre-pay their gratuities before they travel with some cruise lines. Other cruise lines will add a daily gratuity charge to your on-board account. This will need to be paid before you leave the ship.
Other cruise lines have stopped charging guests for gratuities.
Please ensure you check the gratuity policy for your chosen cruise line before you book.