For those of you with a car (or willing to try Uber/Lyft in a semi-rural area), I found the following rates at the two nearest hotels in New Albany. Prices include all taxes and fees for 10 nights.
$95/night -- Holiday Inn Express -- non-refundable, breakfast included
$110/night -- Hampton Inn -- non-refundable, breakfast included
I also checked the Horseshoe online. Through booking.com as above, they wanted $4000 total or $400/night. But online with the code, as sjm suggests above:
$160/night -- includes all taxes and resort fee, refundable, no breakfast, but the room does have a refrigerator and coffee machine unlike most casino hotels. This requires at least a 9-night stay. 9-NIGHT MINIMUM FULL EVENT STAY CODE: S01DIA9
Note that I checked using the 9-night stay code. If you use the single night code, only some of the nights are available at the discounted rate, and the other nights are at the full rate of $400 plus fees. SINGLE NIGHT RESERVATION CODE: S01DIAP
For those who enjoy fine dining, there is a Waffle House AND a White Castle in New Albany! But seriously, there are several nice restaurants in New Albany, including the Exchange Pub & Kitchen very near the hotels, along with all the usual chains.
The difference between the Horseshoe and the HI Express totals is $650 which might pay for your car rental (if you're flying), and then you have more flexibility.