The Redlegs are big around here, as you can guess. We have 8mm film footage (on VHS now) of The Big Red Machine...with the players you mentioned, BigV (don't know about Cedeno but also with Tony Perez, Dave Concepcion, and Cesar Geronimo.)
Graeters Ice Cream...they just started selling that at Kroger. Before that the only place I knew to get it was at the Country Club...sure some restaurants south of here carry it but those are the places I know.
There's also Newport Aquarium nearby. And Jungle Jim's International Market is a cool place. I'm a sucker for King's Island, basically having grown up there...we went there the first year it opened 'cause dad was a foreman on the road crew...and as a teenybopper my friends and I went there a lot!
I don't get there much these days but I love love love Cincinnati. It just has a vibe. (BigV, please don't mention Cincy and Dayton in the same post. Hear that giant sucking sound? That's Dayton...the nastiest city this side of the Pecos.
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I hope you have a great trip. Oh, and they're right...the Air Force Museum is quite a place. It's south Dayton so not too far from Cincy. If you get up that way make sure you watch for The Artist Formerly Known as Big Butter Jesus (or Touchdown Jesus, though I think of Touchdown Jesus as being on the Notre Dame campus) off of I-75. I like to call him Jaunty Jesus now, he of the jaunty hip. Because this never gets less funny to me, I'll post pictures...