Gamera
Hey Rob if I may butt in? Thinking of driving out to Mammoth Caverns for vacation. I was out there in 2009 or so and drove up to the Patton Museum but haven't been back since. So you don't think it's worth the hour drive up at all anymore?
No, it is not worth driving up from Mammoth Caves. Mammoth Caves had some areas closed last year and the tour was only a fraction of what was once offered. I found this out when my family drove down for a day trip. It may be different this year, I don't know. I also suggest buying tickets online in advance to make sure the few tours available are not sold out before you get there.
Also some sort of issue where you had to wipe your feet on these soap pads to not bring out or in some sort of bat fungus spores.
There is a neat little splash park in the Bowling Green area called Beech Bend Park. Small, not crowded and it was fun.