Jason, ditto Peter and Ken, but you can pass on Mark's suggestion. There's certainly no obligatory dress code, but many in the front rows will have tuxes or lavish evening gowns(hopefully the latter will be women). So, wear a suit and tie.
To increase your enjoyment of the program I'd suggest that you read up on the history of the items being played, preferably in materials borrowed from the library although you can find a little info online. It's interesting to read how and why a composition came into being. While you're at the library it would also be a good idea to borrow all the CDs with those compositions that they have. Enjoy.
