Not sure how fast China's market is booming, but to bring it to scale, If only counting Local resident's from Singapore, approximately slightly more than 1/3 of the ENTIRE Singapore population cruising in just 2017 alone. This 1/3 makes up for nearly half of the total that sail in China (assuming that their definition of 'Asian' in this context includes their mainland Chinese market). That definitely says something in terms of the commitment that Royal should have towards the SEA cruise market. Possibly Royal could move Wonder to Singapore year-round after her inaugural China season given these stats, with already Spectrum serving China, and now Singapore Shipless after 2021.
"Asia is the industry’s third largest market after North America and Europe, with 4.24 million cruise passengers last year, up 4.6 per cent from the previous year, according to Cruise Line International Association.
And figures from the Singapore Tourism Board showed that 1.87 million in Singapore went on a cruise holiday last year, up 35 per cent from 2017."
Read more at https://www.channelnewsasia.com/news/singapore/cruise-upgrades-tourism-millenials-asia-11969842