America would be a little taboo and prohibited arms or elbows on the table during meals. And you should be waiting for guests eating together at the table and so on.
In America, it would have little restrictions: no elbow or arm placed on the dinner table during meals, and you should wait for food at the same time as the arap guests attend dinner table, etc.
The United States will have a little Restrictions: Do not put your elbows on the table, or your arms during the meal and you should be eating at once, wait for the guests with dining table.