Just from hearing the advice of those on CC, I have never put a fondant cake in the fridge b/c I understand that condensation does all sorts of nasty things to the fondant. From what I've learned, you want to be careful about what you fill a fondant cake with - choose fillings that don't require refrigeration (or can stay out of the fridge for a long period of time).
I always put my fondant cakes in the frig - NEVER had a problem! 
Yes, you will get condensation on the cake, but DON'T TOUCH IT and as it warms up to room temp the condensation soaks back into the fondant without any markings. It is better to cover the cake with plastic wrap if you put it in the frig but it's not the end of the world if you don't. Also don't worry about the cake drying out -- you have cake, then a layer of buttercream (considered a liquid) then an layer of fondant. For the cake to dry out the air in the frig has to go through the fondant, then through the buttercream to even get to the cake and that's not going to happen. And the fondant as it warms up will also absorb the oils from the buttercream to keep it pliable. So you see, no worries!
There are lots of foums regarding this topic.... to refrigerate or not? Personally, I refrigerate nearly all my fondant cakes and never had a problem.... knock on wood. If condensation happens, I just remove from frig in enough time to dry out.
Try a search here on CC and you can help decide which would work best for you!!
~~ Jaime
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