If I'm traveling anywhere out of state, whether I've been there or not, I don't consider a single day to be near enough time. Traveling can be such a great way to break up the monotony of daily life, why not take advantage of it? Even if you only give yourself one extra day, use it to go eat at a restaurant, or hang out at a park, or a museum or something. See a sight or two. That is if you can afford it, anyway. I just think that if you go out to someplace just to see a show, and immediately come back, it will all be over so fast that it might be difficult to really savor the moment. Traveling can be really stressful if you don't allow yourself time to just enjoy your surroundings.
What state are you considering?