Well Teacher,
Vegas is a great bivouac for the Grand Canyon and Hoover Dam. (OK, do the dam tour. I just had to add that.) Find a charter flight with a tour group for cheap.
While in Vegas, take them to a Cirque show. These are expensive, but none will regret it.
Most of the others mentioned are a day+ trip, but you can do it.
Louisville is a great starting place for the eastern part of the country, so don't pass up the things that are in range.
Buy the book and do the Natchez Trace with a stop in Vicksburg.
Run the Blue Ridge Parkway and make all the special stops.
You have about 2~3 years before they will be self propelled and gone. Make the most of it.
Matt
Matt & Mary Colie
A sailor, his bride and their black dogs (one dear dog is waiting for us at the bridge) going to see some dry places that have Geocaches in a coach made the year we married.