There is absolutely no one curtailing your rights.
You are free to remain armed and not visit the venue. The event "owner" has every *right* to set rules. Protest by not supporting his event.
It amazes me that no one complains when gun shops do this very thing.
Because the state fair grounds is public property. I'm getting tired of private companies renting a space and imposing unconstitutional rules.
If it is actually privately owned I've got no problem with their rules.
Last 1500 I went to I carried concealed. My gun is not leaving my hip unless it's use is needed.