While not for the budget conscious, the Banks parking garage also provides a nice premium parking option. For about $15, you can park virtually under the stadium, and minimize your walk. If you are coming in from out of town, I would recommend grabbing dinner at the Moerlein Lager House. This is an amazing looking facility, and it sits on the former site of Riverfront Stadium. Christian Moerlein is an old Cincinnati brewery, and this is a place you won't find anywhere else. The views are also amazing from every level. Best of all, this is just steps from the ballpark. Congrats to Cincinnati for getting this one right. (so far)
Here is more information about what else can be found at the Banks