Simple:
Listen: ABC or RN on the radio
Drink: Beer, Coffee, Whisky (in that order over the night)
Eat: KFC drive through on the way out, Pringles with the beer, bowls of instant noodles (the good asian brands) with cans of chilly salmon mixed through at midnight.
No problem staying up all night, been doing it for years...as long as I don't have to work the next day...although I have even done that a few times (pretty hard though)
Setting up the 12" dob and enjoying some visual observations throughout the night is great fun too and makes the night more interesting too.
Mike