For all these parties, dress WARMLY! Bring more clothes than you think you will need. You can always take them off if you are too warm, but you can't put them on if you didn't bring them. Cold weather generally means better viewing.
NOTE: IF YOU ARRIVE AFTER DARK AND WHEN YOU LEAVE, PLEASE TURN YOUR HEADLIGHTS OFF. ALSO, DO NOT USE WHITE FLASHLIGHTS, ONLY RED FLASHLIGHTS THAT ARE NOT TOO BRIGHT.