Is there a dress code

Semi- casual

No

I walked in there without a tie and jacket for lunch and I had no problems. Don't know how shorts and a Tommy Bahama shirt would work though

Yes. It's pretty much business casual. Not too stuffy. I wouldn't recommend a tshirt, ball cap or tennis shoes for men. For women, no shirts, flip flops or or tank tops. Jeans are allowed for both. I'm sure a button down is also required for guys.

Yes, no shorts, hats and sandals I think