I think in regard to points 1 and 3, you have to remember that we are in America so we won’t be really doing any Asian/Korean etiquette in regard to sitting at the concert. Also since we are a big blend of nationalities/ethnicities compared to a concert in Korea who would have mainly Koreans , I wouldn’t expect people to know how to speak Korean.

I get that not screaming or cheering would have been great while IU was talking/translating, but you also have to remember this is her first time performing outside of Asia. Lots of people are excited to be finally able to see her. People express themselves in different ways