What I have learned you can't refrigerate a cake once it is covered in fondant. I have always followed this rule and I have to say it makes cake decorating a little trickier. I love watching the cake shows on TV and what I have seen from these professional decorators is that they put their cakes in the fridge after it has been covered in fondant? Does it depend on the fondant I use? I always make my own and I follow the wilton recipe, which works well. But they say refrigeration may cause moisture and even puddles of water on the fondant. I have to say, if I could refrigerate a fondant covered cake it would make decorating a whole lot easier (to keep fillings set and fresh). Thanks!
I use Satin Ice, and I refrigerate all of my cake,with no problem.
Just make sure and not touch it (as it will become sticky/tacky when it starts returning back to room temp) After a few hours -that will dissapear and you can re-arrange or do whatever you need to do to it