Rugby fans will not be singing or chanting all that much, a very different group of people tend to follow Rugby Union, but the noise at these games will be evident on the tv highlights or you can watch the whole game after tomorrow on the Premiership rugby site to get a feel for it. If you want to feel it yourself, go to Kingsholm in Gloucester and stand in the shed, you might be advised not to wear a shirt of the opposition if you are of the timid type.