I've been going to this car show for the past few years, I've taken my grandfathers GTO a few times and I would highly recommend going. It's pretty chill, there is no judging or cost to get in, many people bring there daily drivers (if they are nice enough), they allow you to carry (and drink) open bottles of alcohol in the streets, and some years they even have a smoke show towards the end of the night.
I have seen a lot of nice cars there over the years and even a few 1st/2nd gen J's there, but never any 3rd gens. I hope someone can make it out besides just me this year.