Well, I guess it is both...
Well, I guess it is both nightlife and daylife. The Historic 4th Street area is a charming area of town to spend an afternoon or evening.
There are antique shops and little knick-knack stores, there are great restaurants like Luciano's, fun bars like Buffalo Alice, and there is this awesome salon and day spa called Body & Soul. The Fourth Street Brewing Company brews some great beer and the food is okay too.
I also highly recommend Uncle John's Music Cafe, a music and coffee shop that has great food. There is also often live music in the evenings.
Dress Code: Whatever you want.