The idea sounds like your begging. With the economy, most people have touched their savings.
Try to do what you can. Elope perhaps for now and have another traditional ceremony at a later date when your funds are readily available.
OR ask friends and family help out with flowers, making food, decorations,look for bridal gowns that are inexpensive. Instead of a bridal store check out places that sell evening gowns for the bridesmaids.
There are ways that you can do wedding without exhausting your energies on corporate sponsorship. Can you really sit at the bridal table with a red tablecloth that has TARGET written across it? LOL!!
If you know all these celebrity people then ask one of them to pay for your wedding. If they are childhood friends, ask them to sponsor your wedding. Ask the Jonas brothers to sing for free. Ask Larry Johnson-NFL to help out. If you really know these people, then why are you asking us for advice? I am not mean but think about what you are saying?? We are regular people. If you have connections then use them.
If you are a business woman and you know all this information, then why ask the questions. If you have gone to weddings that were company sponsored, then ask the couple how did they go about it.
If you are who you are, then you need not to take this personal. You should be writing your letters like Kristy said. If the answers are not appealling to you then mark Kristy as the best answer and move on! Time is money!!