This is a hot button topic.
The hoards (and that is an appropriate description) tend to be LOUD, rude, obnoxious. They cut in line, pretend not to speak English when confronted and will loudly chant, clap, sing songs while walking through the park, standing in line, waiting for a bus, and sometimes while riding a ride. They've been known to mow down unsuspecting people on pathways, and they are woefully under supervised. A bunch of unruly teens let loose in the parks. Many complain that the guides "clog up" FP lines gathering 50 or more FP's at a time for the group.
I generally just walk the other way when I see them coming.
Welcome to the DIS.