What is proper dress attire for this establishment? We are from out of town and have made reservations to dine here after a trip to the Christmas lights at the Art Museum. We will be dressed fairly casual and warm for the museum excursion.

Casual is fine

In my experiences, I've not been out of place in a suit for lunch meetings, nor business casual for dinner. It's a great place with really great menu options, you should have a great experience.

I have been twice. The crowd often appears to be "business casua.l" But when i last went, My party and I were dressed very casually and were not treated any differently. The level of service at the restaurant is very high and calling them might give you the best answer. However, I would not worry much. Enjoy!