I am making my daughters 4th b-day cake next Friday. Her party is at Chuck E.Cheese the next day at noon. I am terrified I will ruin the cake in the fridge but I know it has to be in the fridge since my buttercream contains heavy whipping cream and secondly afraid it will sit out too long at the party before it's cut.
My cake is 2-layers, bottom is 12'' and top 9'', I have a cake saver and/or a box that will fit the top layer but cannot find a box for the bottom 12'' layer since I am putting it on a 14'' board. I've read about keeping cakes air tight, plastic wrapping the box, some even said to avoid moisture inside the container leave it cracked. I am so confused and overwhelmed. I searched for hours to find a good buttercream recipe like the store frosting without dairy so I could just leave it out but all the recipes I've found call for butter or milk. My recipe is the Wilton's Unbelievable Buttercream recipe only uses heavy whipping cream. Any suggestions for proper storage over night and how long it can sit out at the party without spoiling from the dairy in the frosting? Thanks!