Wedding cake and reception ideas needed,for fun young couple.?

We are planning an outside wedding and reception for 250 people in august in a walnut grove. Its a beautiful canopy of green walnut trees and gr. Its not formal. The colors are hot pink and orange.and Gerbera daisy and sunflowers are the flowers chosen. We'd like any orange and pink pictures of ceremony, flowers, decorations,centerpieces,and attire.