Pulling this thread back from the dead....

For whoever is interested, I did get tickets for 9/21 for the orchestra in Philly.

Since this is my first time, any idea on what I should expect, things to know going in, etc?

What do people wear to opening night? I don't know how fancy to expect...will people have tuxes on, or is a suit fine, or (I doubt it) do people not even get that dressed up? What other newb questions that I don't even know about should I have that someone (JohnK I would guess) would have answers to?