Who cares if they are real or not if it saves you $$$$ I say go for it!!!
Many Cake Bakers and Makers are now renting their over the top cake "displays" for you wedding! How does this work you ask? They rent you a beautiful cake made of Styrofoam and wrap it in fondant for all your picture needs, while in the back you have several sheet cakes to cut up and cram in each others faces!
VIOLA an Optical Illusion they never saw coming, and you get off for a FRACTION of the price! Don't feel dirty about making this decision, and fooling your guest, be glad your saving $$$$!
Here are some local bakers who offer this service: