Using Hibiscus flowers?

Has anyone used Hibiscus in their centerpieces and/or bouquets? I'm having a really tropical wedding and Hibiscus is my favorite flower. Are they hardy enough for arrangements? I can't find them on florist websites. Anyone with any information would be super helpful. I can't find squat!!

Using Hibiscus flowers?
I dreamed of having hibiscus for the longest time then the florist told me they were not an option. For one they wilt to fast after being "picked" and second they close up at night and open again in the morning, considering my wedding was in the evening that was not an option to have even the plants. Maybe you could just have the plants as decorations. Im sorry the hibiscus wont work any other way. I was just as disappointed as you are!
Reply:Awww, I love hibiscus flowers. I got this idea shot down by the florists. They said the flower does not last long enough. They did suggest silk hibiscus though. Hard to find also. Check at your local greenhouses, and ask them. An alternative would be a peony, it's another tropical flower that you can find a bit easier.
Reply:As far as my experience with hibiscus' goes (I am not a florist but have put them in arrangements before) they wilt very quickly. They really don't last long at all. The only thing I can suggest would be to have 'fake' ones... they can still look quite nice.
Reply:I have heard that they are not too hardy. Sad too....they are a beautiful flower!