I have my cake in the freezer, how long should it be out of the freezer before putting on the fondent? Once the cake is decorated what is the best temp to store at before serving?

if you are covering in fondant I would wait until it completely came to room temp. Last think you need is condensation underneath your fondant.

You can also keep it at room temp. Putting it back in the fridge can cause it to turn sticky when it comes to room temperature. Doesn't hurt it but it takes a while to dry.

I cover my cakes at refridgerator temperature. That way the icing is still set up and doesn't bulge.

I tell clients to let them come to room temperate for an hour before serving. I don't freeze cakes, but I wouldn't cover a frozen cake with fondant.

I put mine in the frezer, they don't freeze completely just put it in there during the time it takes me to get my fondant rolled and ready. than i spray sugar water and put it on. If you can ice the cake the night before and just refrigerate that works great too. I used to put my fondant on too quick and the weight just makes the cake loose the perfect shape.