I also run the other way when I run into tour groups at WDW. But, like others have said, I think it is more the tour group mentality coming out. My DH, DSister and I spent 8 days in Dublin last April and had the misfortune to be on a day long bus tour with a group of about 25 Italian teenagers with only one adult with them. They were all very loud and rowdy and kept throwing soccer balls between them. The bus driver had to keep warning the woman to quiet them down, but she would not speak to them. He finally pulled the bus over and told them if they did not behave he would leave them at the next village and they could find their own way back to Dublin. He got a cheer from everyone else on the bus and quite a few big tips when we got back to Dublin.