Bryan,
If you are flying in, I would try either the Executive Inn, or the Executive Inn West. They are right by the airport with easy access to I-65 to downtown. If you are driving, I would look at the I-64 and Hurstbourne Ln area. Lot's of places...Radisson, Holiday Inn...etc. I-64 will take you right to Indiana to the exits for the boat. Definitely call ahead...I would much rather put my money in play on a table than spend a ton of bucks on a nicer room for one night!
Welcome to town!