Scale is a central theme of the cruise industry. Excessive scale in the ocean liner business gave rise to the birth of cruising in the 1960s. Air travel had gradually replaced ocean travel, and the ships built for scheduled passenger services were put to other uses, such as leisure cruises. For the cruise lines, the achievement of cost-saving scale effects has always been a major driver of business development and innovation. The formation of cruise ship fleets in the 1970s brought down the costs of marketing, distribution, personnel, training, purchasing, and administration per unit of...