Coolest Hot Tub Cake

This Hot Tub Cake was for a friend who graduated with her master’s. They recently purchased a hot tub and thought that should be my theme. The cake was 2 layers with the top having an area hollowed out. It was covered in fondant that I marbled to match the color of their hot tub. Fondant character with buttercream ‘water’ and kit-kats around the edge. My handwriting is terrible but it says ‘Time to Relax!’