Katsucon was just recenty held at the Gaylord Hotel in Prince George's County on the banks of the Potomac River. The con has been using the hotel for sometime. This weekend seem to be the most troublesome event the con has held there. The other half of the hotel was being used by the B'nai B'bith Youth Organzation. From emails and friends I know that attended, the BBYO seem to have been a ruling group of use of public and access areas of the hotel. I heard of physical grabbing and pushing of anime con attendees by adult chaperones or verbal downing and use of unnecessary words and langage on other con attendees some cosplaying.
Some of the people may have beenable to talk and tried to be friends but others were not going to let it happen.
I heard there was a meeting of the staff from both groups and the hotel management to prevent anymore problems but con attendees said there were still problems.
I did attend on Saturday morning for four hours but had to leave for a fire dept meeting. I was dressed in a fire dept jacket and hat walking thru a public area when a BBYO chaperone got in front of me to prevent me from walking into a area they were controling. I just said sorry sir and moved in another direction.
I have been to other cons where there was some crossbooking of groups that there was some confrontation.
Otakon at the Baltimore Convention Center the first year had a to share with a Arab org.
Nekocon shared the first year of the Hampton Roads CC with the Marine Corps Ball and a local Catholic Church anniversary dinner and in the coliseum across from the convention center was a rap concert. There was some confrontation and some comical situations during that.
Nekocon shared the con center a couple of more times with the Marines and other events with some good and bad.
I don't know if anyone has seen, heard or experienced similar problems while attending a con but its hard to believe what happened at Katsucon.