Getting a horse ready for a rodeo?

Are there going to be bulls or cattle at the rodeo? I leased a horse that was pretty much bombproof at home but when I took her to the rodeo she got really scared going past the bulls. Also, I know you blasted the radio, but in the arena we were at the speakers were hanging over the middle of the ring. She only got scared going under them. Just some stuff to think about. Have a great rodeo!