In short: yes they do become noisy, although I didn't have a room facing into the quad it can be really annoying when people are outside your room (although I must admit that I, on several occasions, was probably the noisy one annoying everyone). I remember an American bloke in my block just shouting at people to shut up really really loudly, and they did, it was quite funny. I wouldn't call security on people - not like that fat dude can do anything to stop people.