There's actually a very good transit system available, both from the airport, and to each day of the event.
Transit instructions have been published on the event site and will soon be updated with the following airport transit details:
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..arrange transit from/to the Airport, which is actually in Kentucky. Go to <http://www.tankbus.org/LinkClick.aspx?fileticket=x...> to download the Airport Express (Bus #2X) schedule. Then go to <http://www.tankbus.org/> to download a transit map for the Transit Authority of Northern Kentucky (TANK). The #2X bus picks up a several points at the airport, and runs to downtown Cincinnati in about 30 minutes. It costs $1.50 and runs every 45 - 60 minutes on weekdays, and at 75 minute intervals or more on Sunday....
Depending on your arrival time, it should take less than two hours, on two connecting buses, to get from the airport to the meet on Friday afternoon. Unfortunately, there are no evening or weekend buses that serve the remote Baymont location in Sharonville, so once you get to the Friday meet, you'll have to find a ride.