Whatever you do, don't leave this important element up to chance. Outdoor events come to life when distant trees are lit to create atmosphere. The event's entrance and registration table are the first thing your guests will encounter. Make sure that the area makes it clear that something special is about to happen. You might consider environmental entertainers, animals, or at the very least a decor theme or color scheme that accentuates what is going on inside the event space.
Entertainment is the foundation of a themed event.
If you have a favorite entertainment group you work with, ask them what they can do to help enhance your theme. Many times, just a few inexpensive and easy to attain accessories can change the overall look of a group. It is preferable to find entertainers who will make it their job to get your guests actively involved with the event. Experienced performers know how to do this without being intrusive or annoying. They also know how to pace the evening so that guests are given a chance to visit and get accustomed to their surroundings before they are expected to get up and dance.