That is going to depend on quite a few things.
- Is it inside or outside?
- If outside in the shade or in?
- If outside what is the temperature?
- What is the filling? (a fresh fruit will respond differently than a mouse or cream)
Inside-airconditioned building. Filling is chocolate mousse (heavy whipping cream and chocolate).
Also-with that type of filling can I make it in advance (like tonight to fill the cake on Tuesday for a Wednesday delivery)