We stayed at Grandma's Rv Park (2013), stayed at Louisville South KOA (2014). Both EZ on/off I-65, rates were much better at Grandma's and had most sites were level (Lvill So KOA hilly terrain, and recent owner change they have tried to "level" more sites.). Both can easily accomodate 45' class A towing, both have pull-through sites, both park utilities worked well. We would stay again at either one.
In 2014 we stayed at Nashville KOA (Music Valley Drive), also easy on/off I-65, lovely new patio (large) sites both back-in and pull-through and can accomodate big rigs easily. Lots of amenities at this park, places to eat, large shopping mall with Bass Pro Shop, and of course...Grand Ole Opry all very close by KOA. We will definitely stay again, but will try to avoid acorn season in the fall (lovely tall oak trees and late fall acorns rain down from above
X2 on Louisville Slugger Museum, worth a visit, and we strolled to the riverfront a block or two away after touring the Slugger Museum. Check out TripAdvisor . Com for all the Lville area places to see and things to do.
X2 on Bardstown, KY.
When in Nashville area, if you are interested in historical/civil war sites, take I-65 South about 30 min from the Nashville KOA on Music Valley Dr to Franklin, TN. Downtown Franklin has many shops, boutiques etc. Civil war era plantation, Carnton Plantation, as well as Carter House and Lotz House are in Franklin,TN. Battle of Franklin directly tied to all three of these civil war homes.
Kentucky Horse Park is on our 2015 list so cannot add anything, except "me too soon "
Safe travels to all