I've just made two road trips in the last two weeks with my brother from Western KY to the Cincinnati area on potential car buying trips. Both times on the way to CN, he's mentioned stopping on the way back to tour a distillery or two, but both times we've been driving back through too late in the day to be able to take the tour(s). Hopefully, you're schedule will work out better.
IIRC, it was on the Jim Beam tour where they offer two or three free samples, even of the REALLY old/good stuff, so if you go there, be sure to use your samples to try the high $$$ stuff.