Should I refrigerate a whipped cream & fondant cake?
Well Im not completely covering the cake with it, Its just going to be fondant make into an american flag draped over one corner of the cake. & Ive never heard of covering fondant with frosting. Usually you frost with a (non sweet) frosting or gumpaste & then form the fondant over it. Never in all my years of cooking have I covered fondant with frosting. Fondant always goes on the outside, as the final layer.