Originally Posted by SJOGuy

Everything closes during those hours. When I've flown out on early-morning flights, I've noticed shops and eating places in the airport all seem to open around 5:00 or 6:00.

There's a Denny's across the highway from the airport. Of course, they're open 24 hours. You'd almost need to take a taxi there. The distance is short, but without sidewalks and it being a busy highway and it being dark, walking wouldn't be safe.