Keep in mind that the CVG airport is not all that close to the city of Cincinnati, and isn't even in Ohio for that matter. It is about a 25-30 minute drive each way from CVG to downtown and except for the ribs at Montgomery Inn, as mentioned, there is not much else worth while. If your looking for an economical time-waster and/or you don't like good ribs, just catch the shuttle to the Marriott at the airport and have lunch.