Just came back from the 5-night Indo China Explorer with stops in Sanya (China), Chan May and Halong Bay (Vietnam) and wanted to share my thoughts.
Demographics
Mainly Asian retirees. Out of 1,700 guests, over 1,110 from Hong Kong and China, 150 Japanese, 100 Koreans, a few hundred other Asians and just a few Europeans and Americans. There were very few children of any age on this cruise but that likely changes during school holidays. Most of the passengers were with tour groups and didn't speak much English, which meant very low attendance for the onboard activities.
Lots of storage space, small shower but convenient access to the elevators.