We were there July 17 -24. Stayed at Yacht Club so we had no pool or room issues with the groups. We could spot them easily and veer our plans as needed...except for a few occasions.
1). Waiting for the Electrical Light Parade at MK ...right by the red sleigh, across from the funnel cake stand. We were there an hour and a half early. About 30 minutes before the parade a group of 12 squeezes in behind us...about 10 minutes before the parade here comes 40 more carrying about 60 hot dogs and sodas. One guy tried to squeeze under the rope and accidentally clotheslined a Canadian boy sitting near us...it wasn't pretty.
2). While using FP's at Test Track a whole group of about 50 in yellow shirts went into the single rider line. The CM at the entrance was telling them it was single rider, one person per car. They went in that line anyway because there was no line. When they got to the loading CM they were saying "6" and she was like, no I need one and they were holding up 6 fingers saying 'No Englise"...another CM showed up pretty fast, talked to them and they shut up and rode one at a time in available cars. The girl in our car cried the whole ride.
3). At the American Experience (name?) at Epcot we headed over on Saturday July 24 at the 11 AM performance just as the doors were getting ready to close a big group comes in and sits in the two rows behind us...the guide picked the rows as the theater was pretty empty...maybe 40 people watching the show. Well, the group behind us talked, laughed, texted and kicked seats through the whole show. We moved once..but at the end I went over and told the group leader that out of consideration of others they shoudln't drag these kids into other shows that they have no intention of watching in an appropriate manner because not only do the kids get nothing out of it..it ruins the experience for those who wanted to enjoy the show.
We didn't let any of this ruin our trip and out of 8 days...three first hand experiences weren't too bad. Now if we had lost our parade viewing area...it might have gotten ugly!