Go see the New York Philharmonic Concert, your kids may not pay attention, you may not be able to absorb the music to the extent you'd like, but it will be a marvelous experience if you prep and work together to make it a delightful and exciting night.
Pack food, bug repellent, water, a blanket, balloons if you are meeting people, glow-in-the-dark things, games, etc. Sit in the back if you've got kids because there is more room for running around and catching fire flies. Snaps (you know the little white things you throw on the ground and they snap) is a great occupier pre-and-post concert. Enjoy!