Diamond Princess on the Japanese route is always my choice as it has the Japanese style of decoration such as the water kettle inside the cabin that you can make your own tea. Inside the dinning rooms you can always have Japanese style food. I particularly love the traditional Japanese breakfast in the dining room.
The port facility always arrange good shuttle bus service (used to be free but now always with fee). The port staff are always efficient and helpful. It is so well well arranged that you do not have to wait too long.
There are always Tourist Information counter at shore. They are always helpful and kind, provide you good information in local transportation, points of interest, where to eat and what to food etc.