M.C.
I live in Middle TN and even though many of our best attractions are closed, there is still many things you can do. Especially with the kiddos. =0) You may have already fully decided to avoid us, but just in case, I'll name a few things that are safe and up and running. You have the Nashville Zoo, the Adventure Science Center (super duper fun museum for all ages!!!!), Nashville Parthenon and Centennial Park, Stones River National Battlefield, Ryman Auditorium, Nashville Shores (opens May 22nd), and many great restaurants. It's sad that Opry Mills mall, the Opryland Hotel and the Grand Old Opry are all down, but there is still enough to keep your family having fun for a couple days. =0)
Also, this website is updated daily (scroll down to the "Downtown Businesses: list of openings and temporary closures" section)
http://www.nashvilledowntown.com/news_flash/