Dont need a food grade hose to empty it, you do to fill it though so it might as well be the same one. Your partner can empty it with a bucket if feeling energetic but a pump is much easier. Are you hiring a pool or have you bought one?
We've bought one from eBay - I didn't realise it didn't have all the kit though Ooh, a tenner from maplin? That sounds better! I think it has to be a dirty water submersible pump though... Sigh. I think we'll just have to fork out for the kit then.