Normally, those of us from the science community who go to this simply show up and wander around looking at the exhibits and talk science to the kids. No shenanigans. Also, we often go to a nearby venue and get lunch. Last year it was Grumpy’s.
Over the years, I think, the quality of the exhibits has gone up and the attention to the usual “creation science” myths has gone down. I like to think that a bunch of evolutionary biologists showing up every year has made a difference.
They still put Bible quotes on every exhibit, of course.