Following are the main differences:
In Singapore, table manners are in-lined with the western culture. However, in Japan , it is a basic courtesy to say Itadakimasu before eating and Gochisosama deshita after finishing your food.
a traditional Japanese home usually uses parquet floor design and Singapore uses marble floor and tiled.
In Singapore, usually the types of card games play are mainly Poker cards, such as Black Jack, Big 2 and etc. However, in Japanese culture, their traditional card game was called Hanafuda.