My only park experience in the last five years has been BGW, BGT, and SWO and I have to say that I was vastly disappointed, though that may be more of a personal issue, remembering the peak of those parks in the early 2000's.
That's a lot of weight for the much smaller KK to carry, to be honest. But I promise you that if you go, you won't soon forget your visit.
The setting of the place is bizarre, wedged in its entirety into the corner of the Kentucky Expo Center's parking lot. Due to KK's unique real estate history, you probably will be directed to drive right through the center of the park's footprint in order to reach its front entrance. Later in the day as a pedestrian, with the help of crossing guards, you may dodge vehicle traffic in that very same spot to cross to the back 2/3 of the park. Thankfully there's also a separate pedestrian overpass available (with good park views rivaled only by the Giant Wheel) if the ground level option doesn't sound so hot.
Kentucky Flyer was a surprise hit for my group a couple of seasons ago, just a ton of fun from a tiny ride that juts oddly into a totally different parking lot. Re-ride city -- don't pass it up just because it's small and out of the way. Lightning Run on the other hand didn't seem to be running well, more uncomfortable and janky than happy-violent, though a lot of people seem to love it. Maybe it was just having a bad day. I found myself looking at the vestigial Schwarzkopf footers beneath the ride and thinking about what once was. Meanwhile Storm Chaser was precisely what one would expect from RMC, including having That One Inversion that is just divine. Honestly, Storm Chaser is what a generative AI bot would sketch out if you trained it exclusively on all other RMCs and then turned it loose on a modest plot of land.
Compared with most of the park, the walking stretch between the carousel and Storm Chaser features some notably better than expected horticultural choices. If your in-laws are with you at the park, you can score some coveted Good Offspring-In-Law Points by pretending to be surprised and pointing out the robust, healthy condition of the many oak leaf hydrangeas in that area. The soil must be so well drained! Do they amend it to preserve the acidity during peak growing season? You can and should ask these questions out loud. Mild concern about kids potentially damaging the hydrangeas' largely unprotected branches is also appropriate.
I had a good time at KK, but I wouldn't suggest considering a season pass. I agree with
@Unagi that Holiday World would be the superior overall choice, all else being roughly equal. An extra hour in the car isn't so bad in exchange for that. Holiday World is a bit odd in its own right, but that's a different thread.