The actual state park itself is fairly uneventful, there is a jungle gym and grounds to walk on, as well as a well-manicured golf course (though having never played golf in my life, I'm not one to evaluate how good it was). We went during the summer, and so were treated to the Stephen Foster Story musical. We took our baby and almost-three-year-old, and I think we were the youngest family there by about 50 years. Our toddler sat through the beginning and was entranced, but about half an hour into the show he wanted to wander and so my husband took him out while I watched the rest with our baby, who was only 4 months old at the time and just nursed and slept. The musical was engaging and I personally love period dramas, so I had a great time. The amphitheater was well-lit when I needed to walk up the stairs to get water or use the restroom, and the staff were very friendly and helpful. The seats are comfortable, and it was a great venue to take kids: lots of space between the seats so they can stand up and watch, for instance. The show was a bit mature for our son, but I bet about 6 years and up would love it! Tickets are a bit pricey, but in my opinion, worth it as the actors were very talented and the script, music, and choreography were all top-notch. It's a long show, about 2 hours with a 15 minute intermission, so be prepared with a water bottle (and it was hot in July, so they handed out fans!) and maybe some snacks.
We were provided complimentary admission for the purpose of this review. All opinions are my own.