I am glad to hear things worked out for you and that your girlfriend was not really hurt. We have been to Disney 8 times during the summer months and only found the Brazilian tour groups overwhelming when we went in 2010 in the middle of July. We have been in there in early June, late June, 4th of July week, late July, early August and late Aug and never ever seen the groups like we did that year. We can remember seeing the occasional flag here or there in other trips, but in 2010 they were everywhere. I don't mind them coming and visiting I just wish they would break up and not stay in a mass of 20 or more. We encountered pushing and shoving, my 4 year old niece and sister-in-law who was pregnant at the time, were pushed and my niece fell over by a group trying to meet the rest of the party waiting to get into the Nemo show. My brother-in-law did say something to a CM and the entire group was asked to leave the show, but that is all that was done. We also found them sitting on the ground in the middle of the walkways blocking people walking by, and then when they would get up they would leave garbage on the ground.
We did not see them at our resort, we were at POFQ, but we did switch to All Star Sports for our last two nights and they were everywhere. What got me was that they actually were given a room that looked like an office to handle everything. It was a room in the surf section of , not in the lobby. We walked by the room one morning and the door was wide open. The room had no bed only a desk with a computer and hanging in the window was a sign with the Brazilian travel agency that was running this groups tour. It kind of blew me away.