It is common to invite a business guest to one's home in the U.S. This is considered a gesture to show goodwill between associates.

Be aware that it is a custom in many U.S. homes to give guests a tour of the general rooms of the house when guests arrive.

If you will be entertained in a home, expect the host's or hostesses's spouse or partner to be a full participant in the conversation.

Unlike some other cultures, it's perfectly acceptable to refuse an offer of food or drink. In most cases, the host probably won't urge you to eat.

Don't be afraid to ask for something. Use manners and ask politely.

Before going to visit a friend, it's common courtesy to call ahead.