I think what the posters who are expressing annoyance at the tour groups are trying to get out is that people who visit need to relax and tone it down some. It's not just the Brazilian groups either. Quite honestly people can ruin your vacation in a heart beat. My wife has been run over by white soccer moms pushing strollers, my cousin's wife was chastised by a soccer mom for standing up during the Boo to You Parade because her kids couldn't see. Problem was, we had been in our spot for over an hour waiting for the parade and the witch came up when the parade started. The worst was when I was pushed off of the tram by a latino while I was holding my three year old and a stroller. We were both pretty lucky that I didn't have a free hand because the outcome would have ruined a vacation for both of us. People need to relax regardless of what country you are from. This isn't about culture, this isn't about race. It's about being a respectable human being to each other and treating each other fairly. Say excuse me, in what ever language you know and show some freakin' compassion.