Update 1:

Is a plain skirt ok?

People who attend concerts will also pay special attention to their clothes. After all, it is an important social place. It is no wonder that today's "concerts" give people such a heavy feeling, as if going to concerts is a sacred and solemn event. In fact, there is no certain dress code for concerts now, but people in foreign countries are used to wearing very formal clothes such as evening dresses to attend concerts. This habit is usually related to the historical background of foreign countries. Therefore, it's best to pay attention to clothes, perhaps not as exaggerated as wearing evening dresses, but still more formal clothes should be worn, such as suits and ties for men, elegant and subtle suits for women and so on. Maybe you don't need to be too restrained, but at least you can't be too casual. For example, it is impolite to visit and enjoy in slippers and shorts. After all, it is a basic respect for music art and performers. Usually, the concert starts at about 7: 3 in the evening. Many fans have to get off work, have dinner, change clothes, set off and travel before 7: 3, and go to the concert in a busy and crowded city. Of course, "being late" is hard to avoid. Generally speaking, there is an unwritten flow rule for the program arrangement of orchestral concerts, such as: arranging an overture as the opening in the first half, followed by a concerto; The second half is a symphony. Why is this arrangement? In fact, it is mainly for those who are late. Because as soon as the concert starts, that is, the musicians start playing music, all the entrance and exit doors will be closed, and will not be opened again until the overture is finished, and then the concerto will begin, and the entrance and exit will be closed again until the intermission. This approach is not to discourage people who are late or VIPs from enjoying it, but to show respect to the musicians and performers who are not late. Imagine if you were listening to a concert in the middle of it, and suddenly someone barged in, even arrogant, and swaggered to the position, which not only greatly broke the atmosphere in the venue, but even hindered others' concentration in listening to music. So if one day the fans are late by accident, it doesn't matter to wait at the door. When the performance is over, the door will open to let you in.