amy1979's Green wedding

So here is my problem. I'm having an outdoor wedding which will take place on a mixture of some sand and leaves and probably some dirt. I have a train on my dress and am worried about getting the dress dirty. My coordinator said that an aisle runner won't work because the ground is uneven. So my question is this....is anyone else thinking about bustling their dress for the ceremony in order to keep their dress from getting extremely dirty. I was also wondering if anyone knows how "taffeta" material holds dirt. Thanks.