They let the bell in on Saturday, and then sent a security goon up to our section in the 2nd intermission to tell us that we couldn't use the bell. (but, didn't do anything about the UNH fans that had a bell of their own)
Then on Sunday, they wouldn't even let me bring the bell in. Apparently the NCAA had told them no bells allowed. I did manage to sneak my drumstick in, and was banging on an empty seat next to me (which was loud enough for our section to hear, unfortunately, plastic doesn't carry sound nearly as nicely as a big metal cowbell)