Wednesday nights during the summer there's swing in Downtown Disney. It started last week and goes through mid-August or so featuring live bands next to ESPN Zone and a (tiny) dance floor from 6:00 to 10:00. There was a great turnout of local dancers last week. There's a dance lesson during the first band break and a 40's fashion contest and dance contest in the later breaks. I'm going to try to be there for the early part of the evening when possible. If you're in the area check it out.
