"...that's going to be a long time to go without eating anything, and an impossible time to go without drinking- is water typically safe to drink?"

It's also a long time to go with a potential world domination attempt in progress, or at least a very-nasty-behavior-requiring-magical-coercion attempt in progress. The fairy, though, is more likely to be concerned with his immediate well being than...

It's actually weird that fairies haven't already tried to take over the world on their own, come to think of it. It'd be insulting if none of them cared enough to try.