We are having a casual rustic wedding at a park with a really nice pavilion near a lake. It gets windy and I was thinking of using brown plastic table covers that I could secure under the picnic table top so the wind does not blow them away or disturb the centerpieces. I was also planning on using burlap runners on the tables too. Is this tacky? If so, any other suggestions to keep the tablecloths in place and not blowing all over the place?