[Edna Mode]

Definitely. Even the tea and coffee thing showed the cultural differences of American vs. British culture. In America, making tea for somebody isn't even a gesture of anything.
It's like, if you're making tea, you'll ask if someone wants some too, or something, but as Gemma was explaining how it's seen as a really polite thing to do, Tiffany was rightfully confused because in America people usually make coffee/tea in the morning or get it on their way to work. There's no social protocol to it.
Also, I think it's unfair that half of them knew each other in some capacity prior to the show.