We did alot as you will see soon. Mine came back orignally with EVERYTHING that I wanted at 4k. I cut it by almost half by bringing my own rentals. My biggest expense were the covered chairs for the ceremony. I did not want the plastic chairs that Epcot provides. I don't regret this one at all. I will tell you that I did shop around for other floral vendors. I found that the amount of work I was having done and the variety of flowers that I wanted, it was more expensive to go outside of Disney. I believe that if you are doing a mixed bouquet (mine were roses, stephs, and callas) actually 3 colors of roses, b/c Disney buys in bulk they were cheaper. We also had hydrangeas. I did pick expensive flowers to get the look that I wanted.
When I got back the first budget I did do a little freak dance, but I got on the phone with my Disney Floral Manager and she helped me cut things back. Like reduce the size of corsage, etc. I was EXTREMELY happy with Disney floral and would never do it different.
Oh, yeah one other thing I did to keep costs down...I reused my floral multiple times. This was great in keeping down costs, and since I had 3 park events (ceremony, illuminations, MK photos) This was the best deal for me. If you are having a park event you must use Disney floral for the event. Your personal floral can come from someone else.
Again, nothing but RAVES for Laura and her team.