We (family of 6) have a nearly 2 hour drive to get to the ballpark. I went to 3 games last year, which is 2 more than the year before. Granted on 2 of the occasions, we used the kids' straight "A" tickets and bought 6-12 extras, but we all had a great time. 3rd time we went with a couple friends and their wives.
Each time I parked under the stadium, and have no problem paying for the pleasure/convenience (no complaining). Personally, I don't mind walking to Fountain Square, or taking the ferry across the river, but my wife has no desire to walk any further than she has to. So we park underneath for $20.
If the kids get the free tickets again, I see us going to 3-4 games this year. It will largely depend on their schedules with sports over the summer.
On a side note, I have not been to a Bengals game since they opened the new stadium. Almost went this year, but decided against it. Sort of my own private protest to Mickey boy. As far north as I am, I can still get most of the blackout games via Lima, or Columbus TV. So, I have no desire to go there and spend the money it would take for a day of fun. I would rather take that money and go to an OSU game.