Honestly, I thought it was the midnight buffet a lot of hotels do on New Year's Eve. Several of the bigger hotels in my area do that. They offer a midnight champagne breakfast buffet after the clock strikes 12, and then they have dancing until very late.
I've hit a lot of 24-hour places after concerts, and I almost always get breakfast, and there were a couple of places that used to have midnight breakfast buffets on the weekends. Those were great after a late movie if you hadn't eaten beforehand. I'm a big fan of the late night breakfast.