The brief report from the Orlando passholder is below:
http://orlpassholder.com/2015/09/breaking-chanting-no-longer-allowed-at-walt-disney-world/
Is it just me, or given the mess Argentina is in right now, was it really a tour group from that country (who there can still afford to travel?) that crossed the line or was it the more commonly seen Brazilians?
Whatever, given the report contents,
this is definitely just a rumor as this point. I agree that a huge percentage of WDW guests who have unfortunately experienced the Latin American tour groups would welcome a crack down not just on their chanting but likely also bans on some of the tactics their tour group leaders use (abruptly mobbing fast pass returns) or tolerate from the groups they are leading (unruly behavior in queues, swarming walkways, etc.)