Was just looking at manga to see what next anime episode will cover and got stuck reading more pages than was planning too.
Anyway, noticed this little tid bit at the end of Natsu beating up the two dragon slayers fight in chapter 297. Look at what Minerva says on this page.
The mangastream version is the one I was reading and Ogra says "This will be in crowds for a while, huh", then she says "If they had "a while" to speak of, that is" Both essentially are her saying there is no time remaining.
I have a feeling she is behind this "there is no Tomorrow" that the Princess is worried about. She seems to know that the world, or this town at least is ending soon.
edit: here is mangastream version or at least same translation