The campsite was spectacular, my site was right on the water. This was my first visit to Chickasaw so I was a little disappointed that pretty much the only activities to do are water-based. I had hoped for some more hiking. Visiting all of the springs was a good hike, I would recommend it, but otherwise the trails were pretty mediocre. After hiking all of the trails and with very few other options for entertainment (it was October and around 40 degrees so we couldn't go swimming,) I learned how to fish from the bank near my campsite, which was a lot more fun that I had expected it to be. In just a few hours, I caught at least 5 perch and a bluegill (I think it was a bluegill, but I'm not an ichthyologist haha.) I cannot attest to how good the bass fishing is or if you'll be successful catching fish big enough to eat, but as a complete beginner I will say that catching a bunch of little fish on the shore of the beautiful lake while watching the birds was a surprisingly fun way to spend my trip. The most important thing to me was that the fish were biting frequently enough that it wasn't boring.
Other than that, the bathrooms are spectacular (for a public park.) Easily the nicest bathrooms I've used in any state or national park. Bring a hammer if you're in a tent to drive the stakes down. We had to use rocks because we forgot our hammer and the ground too solid to drive them in with our body weight. If you stay on the lakefront, prepare for the wind. Even after staking our tent down completely, it collapsed under the wind on a particularly windy day. We ended up adding an extra guy line to keep it up. Also, the temperature on the waterfront sites is several degrees colder than those sites behind trees, pack an extra jacket and wear layers!