Amy--DO THE FLYING PIG!!!! It is an AWESOME race, hands down my favorite half marathon course. The crowd support is fantastic, I think it's much better than Disney (although I heard this year the crowd support was better than in the past). The course is very hilly, (ha, ha,
Denny, I PR'd on the Pig

), but it offers gorgeous views of the city. The best is the top of Eden Park mile 9ish, definitely worth the climb. The Expo is well run, not nearly as big as Disney's, but it is very well organized and well staffed.
While I'm out for the Pig this year, Stephen is definitely running the half and I will be scream teaming throughout the course. Last year all the Wishers had dinner together at Buca di Beppo's, we can definitely do that again, or we can pick another restaurant.
Oh, just a few more things to talk you into the Pig: early start (6:00 am), so you can head home on Sunday if you need to, nice weather in Cincinnati in early May--usually the start is around 50-55 degrees and it really doesn't get that much warmer, cheap half marathon entry fee, if you sign up before April (I think it's around $50), great race goodies--a t-shirt, gym bag or backpack, and poster, plus the medal is one of the most envied marathon medals.
Have I talked you into the Pig yet??
Krista