It's a shorter reserve time because it's not very commutable, hence people choose other bases. In your case, you'll have a three hour drive and are expected to make it to the gate 45 min prior to departure. Pretty much any departure after 10AM or so is pretty simple for you.

For someone else who doesn't live in an AA hub, they'd have to get to a hub, then on to CVG, so two legs, which would be a pain in the butt, not to mention the frustration of getting back home after you're done with a trip, in some cases the following day because your trip finished too late to get you back home.

But in your case, walk out to the parking lot and start driving; your ride home will never leave without you.