Playing Rogue Galaxy toinght with Xavier... it gets to be about 15 minutes before his bedtime, and we agree at the next save point he'll head off to sleep.  Unfortunately it winds up taking over an hour before we find the next one.  :(

That's just wrong, folks.  Saving is a right, not a privilege.  Enough other things outside of the scope of the game can interrupt such that having no stopping point for that duration is just serving no positive benefit for your game.  Have a suspend save (destroyed on load) if you must, but infrequent saves just forces me to stop playing your game as soon as I can -- because I don't know when the next time I can gracefully leave is.