I would go over to the cake chatter thread in the dining section for more info. Not all of the bakeries are operating right now, so some hinges on where you're staying. Still can't hurt to check it out. If worse comes to worse, you could work with an outside bakery.
Here’s the cake thread. Depending on where you stay determines what is available. If all else fails, the bw bakery has ready cakes. In a pinch get a Publix cake delivered via instacart