Every year this is brought up. If people can keep it at a nice level nobody would complain.
Our first cart/truck we use to pull our robot at the national
http://www.valleytech.k12.ma.us/robo..._Red_Truck.jpg
It had a nice truck air horn on it. This was put on because nobody would move and the walking space was very small. The radio was put to a level that only the pit people could hear.
Then we move up to bigger and better truck
http://www.valleytech.k12.ma.us/robo...s/roboti88.jpg
But we made sure that the noise level would never be high. If everybody could do that I do not think FIRST would have a problem with that. But teams just like being loud.
What is going on this year at the nationals, they said something about a parade? So wouldn't that make you go out and make a nice cart this year.