I made this cake for a birthday and used the Cricut Cake for the fondant decorations. So far, so good with the CC--I used the Make the Cut! program to import the image of the horse I found online. I used it to cut all of the decorations on the cake just to see how things would go. It took a while to get the cuts done, but I think that would go faster if I used it more often.
I used Wilton fondant because it is a little bit drier than marshmallow fondant and the humidity is high right now...I have read a lot of information in the cake forums about the MMF sliding off cakes if it is humid and didn't want to take that chance.