Yes, I was specifically asking about the airport in SGN.

I'm staying with a Couchsurfing host for a few nights before and I was hoping to sleep in the airport that night so as not to wake her on my way out.

There's no way in heck a Crowne hotel would be in the budget, even if I was in SIN. I'm an outgoing Peace Corps volunteer with next to no money. Hence the whole sleeping-in-airport question.

Good to know about the food court being open, thank you!