Depending on where you sit, you might find the seat a bit dusty perhaps with some little bit of cobweb or not. But comparatively, it's still cleaner than going to movie theater where people or kids slob over the seat with food, etc.
Parking on a Sunday afternoon was challenging, and after 15 minutes of looking for street parking I ended up in one of the many lots that increase their rates when there's a show...10 dollar flat fee for parking---
After the show, check out Cafe Stritch. Its two blocks from the theater. A live band usually plays til midnight. They make good strong drinks, and there are usually tables available at that time. They also serve coffee for you non-alcoholic types.
They have a small bar setup outside (bring cash) to purchase drinks. They only had Heineken and Sam Adams for beers, a couple wine selections, and the usual for mixed drinks. About $6 each. You can bring drinks into the theater.