With my idea, Americans are very frank and straightforward in social activities.
If they like this person, they will show great hospitality to them. about our punctuality, It all depends, it is very unpolite if you are late in commerce or date.
If I were you, I would simply hang up and delete the contact of anyone who makes you uncomfortable. I have friends from Germany and Spain who say that we Americans are far too uptight. As an American, I think it is strange and rude for people who have just met you start talking about sex on Skype. Maybe it is the particular website you are using to meet these people.
I can say that the rich must be the person who is very influential to our government.
As to "The mayor must be the latest to arrive" ,you know why, because he is the most powerful person in a city.
You know I really want to share some opinion of Americans from a Chinese eyesight. haha Our understanding of Amercian come from Internet, movie and our American teacher, that is very unilateral. A while ago, as part of a language exchange, I read an article (in Spanish) by someone from Latin America describing how we Americans viewed the world.
so I guess if I share that with you, you would feel very funny. I would enjoy hearing the stereotypes that Chinese people have of Americans. I didn't agree with many parts of the article. I have a few friends who are second or third generation Chinese (meaning their parents or grandparents were born in China).
But I gusee if it is a gathering of government officals in a city, mayor must be the latest to arrive.
The impression you gave us is very friendly, I have many Amercian teachers, teaching us are very nice and hospitality.
Your KFC and Mc Donalds comment made me laugh a little.
You would not catch me dead in either one of these restaurants.
But Americans tend to reisist formal rituals to honor people in positions of authority.
China is a socialist country,which is differ from your country.
In Chinese culture, we encourage people to hide their negative emotions in social activities, even though someone's world is very rude, which may make you feel uncomfortable. The phenomen of those strangers talking about sex on the internet is common cause they think there is no regulation on the line, no judement ecept you, and they are safe behind the screens.