NWTF Convention is in town that same weekend, just FYI.
There is plenty of live music just about anywhere/any bar/any restaurant that you step into in the Nashville area - especially downtown.
The Southern and Puckett's Grocery are two local and great restaurants. Both are downtown and close to Broadway and all. Prince's Chicken, There are also more "recognizable" restaurants like The Palm, Flemings, etc that are close by. Kayne Prime, Whiskey Kitchen and others are good options, too. If you want to be "tourists", you can hit places like Loveless Cafe or Bluebird Cafe (with reservations).
If you change your mind on getting a car, the Jack Daniel's Distillery and Hermitage (President Andrew Jackson's someplace) are both great ideas for things to do during the day, but both are outside the Downtown area. Look into The Lane Motor Museum, The Grand Ole Opry (separate from The Ryman) and The Opryland Hotel.
Lots to do around Downtown though. You're staying in a good place and within walking distance to Broadway and such.