Tough question... probably face-to-face since I would be able to see their reaction(s).

WYR visit someone or be visited?

Visit.

WYR draw or write?

Hmm, it really depends but at this moment I'd write.

WYR read or be read to?

Read myself.

WYR learn to cook or learn to sew?

Sew.

WYR return a library book on time never finishing it or turn it in late, (with a fee), having finished it?

Turn it in late having finished it.

WYR having annoying siblings or annoying pets?

Can I change my life if I choose pets? (I have annoying siblings sometimes) 😛 Annoying pets.

WYR hide and have someone be looking for you or look from someone who's hiding from you?

If we're playing hide-and-seek, I'd rather be hiding. If we're talking real-life, the latter. I think....

WYR ride a flying animal or a screaming-fast land animal?

Flying.

WYR put a flower or a pretty hair clip in your hair?

Flower. It'll come out easier and be out of my way. 😛

WYR read or write fanfic?

Write! Unless it's a really, really good fanfic like WillowDryad's. I'd much rather read hers. 🙂

WYR be the Easter Bunny or the Tooth Fairy?

(So ditto there, Engee!)

Be one of them? Umm... well, if Rise of the Guardians is anything to go by, I'd go with Bunny.

WYR cook or bake?

Bake.

WYR write a short story or a multi-chapter story?

Short story. (I don't have very much patience when it comes to writing)

WYR Go with Frodo to destroy the One Ring or with Thorin to take back the Lonely Mountain?

Thorin's quest was more hopeful I think.

WYR watch a live-action movie or an animated one?