Add it to your calendars .... you can find out the details at the show.
I have always done multi org events however certain orgs don't like it when you do this. I was asked to fold OSPL due to it (slap in the face). LCS is successful doing it and just look at SBN.
If you don't like a certain org, then don't support it, there is no need to bash them though cuz there are other competitors that may. IASCA sucks

Get out there and support your local events to keep them in the future.