Such a weird concept. I have never heard of someone renting and then returning a dummy cake. That seems like the only way you could save money. Otherwise you are still paying for the time to decorate. But if the idea is to rent and return so someone else can rent it how would it be customized to match your wedding decorations?
Also, the rest of the ideas in that article are equally as lame. Something tells me that David either doesn't know, or doesn't remember what it's like to not have money. Hire your photographer and videographer from the same place? I have actually never been to a wedding with a professional videographer.
And save money by hiring all three musicians from the same company? Really? How about save money by hiring one professional for your entire wedding/reception?
Nothing against David, I love his show, but we clearly run in different circles.