No and you dont really need a tie.
We have been 2 times and Dh is very uncomfortable in a tie, and both times he wore a cubavera (sp) type shirt.
No, you do not need one. A tie will suffice, and I'll bet you can probably just wear a nice dress shirt, sans tie, and get in.
We did see two men without coats turned away until they came back with coats - we were happy to see.
i see this thread going down very quickly..