Well, not playing anything from No Prayer would go agains description of the tour (from Iron Maiden to Fear of the Dark and on official page we can read 'a very special set list, spanning the nine studio albums from ‘Iron Maiden’ to ‘Fear Of The Dark’'). So something from No Prayer is a sure. And I must tell you - I'm more excited for that & fear of the dark than for anything they can play from NotB etc.
I would say that Bring Your Daughter is safe bet - it is a good song, it is quite easy to play and would probably fit nicely into the set.