I am impressed with the many differences between America and Japan. First, Americans do not take off their shoes in their rooms. This is a big difference. The food is also different. I am accustomed to Japanese food.
American foods seem too salty.
The Japanese use chopsticks for eating, but Americans use a knife and a fork. I think that chopsticks are very useful. I am also impressed with Americans themselves. Americans look like adults, but sometimes they seem childish. I have a friend who I thought was about 22 years old, but he is actually only 18 years old.