Went to the Big Bang concert here on Oct. 2, 2015. Although I did not do much here other then arrive, watch the concert then leave, I can say my experience here was awesome. Despite the long lines and crowds of fans, security and the ushers was able to get the lines moving in a controlled manner. One of the ushers was very helpful in pointing me to my seat in the dark crowded area.
The bad parts that i can think of is the seating is so close together but I guess the benefit is that almost every seat is a good seat. If i was overweight or had naturally large hips, I would definitely be miserable.
Footspace was crowded as well. I could barely fit my feet between my chair and the row in front of me.
All in all it was a good experience.