To plan an outdoor theater performance for four couples who love the outdoors, start by researching local theaters or outdoor venues that host spring performances. Consider the location, seating options, and any amenities available. Once you have chosen a venue, coordinate with the other couples to select a date that works for everyone. Purchase tickets in advance and make any necessary reservations for transportation or accommodations. Pack a picnic with snacks and drinks to enjoy during the performance, and don't forget to bring blankets or chairs for seating. Check the weather forecast leading up to the event and dress accordingly. Lastly, arrive early to secure a good spot and soak in the beautiful surroundings before the show begins. Enjoy a memorable evening under the stars with great company and a fantastic performance.