the How
WYR bake cookies with Lucy or steal them with Edmund?
Bake
WYR each eat enchanted Turkish Delight or be put under the LotGK's enchantment?
Horn.
WYR meet Father Christmas or the professor?
KNIGHT!!!!!!!!
WYR go to Cair Paravel or Dancing Lawn for Christmas?
Tumnus' house!!!!!! I don't even care if we eat nothing but sardines... *happy sigh* Let's see those bonfires and all-night faun-and-dryad dances!
WYR die free in our world or die a prisoner in Narnia?
I'd rather be a dull slave with no idea it's happening than one so fearful that I just go with it. So LotGK.
WYR explore Charn (without striking the bell) or the Old Palace (without running into the Tisroc (may he rot forever) et al)?
Bramandin.
WYR visit Digory and Polly's apartments or Professor Kirk's Mansion?
Aslan's How!
WYR fight an evil centaur or an evil minotaur?