Outside Night Wedding

Hi, my name is Joy and I`m geeting married May 10th 2003. My setting is a small valley with an orchard and rose garden to the right of the valley. In the middle of the valley is 2 trees. That will be where we will stand.i need help on what kind of lights to use. I want to have tons of white christmas lights, but i dont know what to do with them. I also want to have the reception right in the valley, how do i keep the guests attentions on the "wedding" location and not on the area behinde it?
Thank you so much for any information you may give. Joy