There are actually mutiple performing venues here. It's also one of the busiest venues in the world with over 1000 performances a year that are attended by over a 1 million people! I can't wait to be one of them!
Seven million people visit this site each year, 300,000 of which take a guided tour. There also probably at least a few lost tourists who don't take the tour and think this is worst zoo they've ever been to.