I'm sure your yells brought Red Eyes and Tears to their sound technician.
I'd hope so. ;P
I lost my voice for a couple days after the Foo's concert.
For Iron Maiden, I got a great spot, not right up close (I was a broke student at the time) but I was right up the front of the mid section, so still reasonably close to the stage, and we were right by the speakers, so I couldn't hear well for a couple days after xD