It is considered rude to accept an invitation and not go. Americans place more emphasis on punctuality than do many people in other cultures. You are expected to be ready on time if someone is picking you up at your home. When invited to someone's home, you are expected to arrive within five or ten minutes after the scheduled time, but never before that time. Many Americans feel that arriving late for social events or appointments indicates a lack of respect and professionalism.
Everyday dress is appropriate for most visits to people's homes.
You may want to dress more formally when attending a holiday dinner or cultural event, such as a symphony concert or theater performance. If you are uncertain about what to wear, ask your host. Introduction and Greeting. It is proper to shake hands with everyone to whom you are introduced, both men and women. Published by Intercultural Press Inc.