Danielle- (great screenname, BTW)
If I had one night in town, I would go to the Bluebird Cafe, no question. That's where songwriters sing their own songs. It's a special experience to hear a hit song performed by the writer and maybe learn about how it came to be. You'll get to hear 4 writers in the round. Adding to the fun is the banter among them. Well, that and the sweet potato fries! Call for reservations- very important.
The Bluebird Cafe
Broadway is fun, but it's very touristy. You could always go for an hour to say you did it.
Have a great time!