I know that Sara Jayne (Raspberry bubbles) had the rose petal cones at her wedding for the staged exit - she had them attached to the side of the guests chairs... (she wasnt married in the WP, i think it was at the gazebo? if you look on Misty Miottos website, click on slideshow, then sara jane and gavins wedding, you will see thier lovely lovely wedding and there is photos of how she had the cones set up.
I think they look lovely... i want them at our wedding!