Dress casual is good but not needed.
No. Just wear clothes. :)
There is no dress code, business casual or relaxed is ok. Sport jacket works , matinee less formal
I agree with Marsha...its not a tux and ballgown occasion to see a broadway play but neither a trip to the gym...
People come both business casual as well as relaxed wear, and fancy. Do whatever works for you, excepting wearing shorts and tanks, which would be too casual.
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