I was there this weekend..
friday/sat/sunday
that's literally the only thing the crowd consisted of..
easy to spot.. large groups, matching shirts, or gear, none of them speak english.. normally one of them is carrying a flag of some kind with their logo/emblem/country on it.
We waited 30 minutes to get on despicable me Saturday, outside of that our wait times were 5-10 minutes tops on everything, without EP.. I jumped right on FJ (we child swapped).
I did witness a few issues with line jumping, where one or two of the members of the group would hold a spot in line, and then 15 more of them would cut in line to join their group. I sort of got irked by this. I don't mind if its one or two people holding a spot for a third or even fourth, but if your group of 20 can't get in line together.. then they just can't ride together IMO.
I wasn't the only one getting miffed at it, but it only happened like once.
Other than that, its easy to beat them. They aren't usually in a hurry, and they take pictures with EVERYTHING (even stuff that made me scratch my head... ) So you can get around them easily. Also, they travel in packs... so if you see them headed toward a ride, either skip it for now, or figure out a way to get in front of them before they get there (don't line jump)